Hydrogen chloride

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Gas phase thermochemistry data

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Δfgas-22.06 ± 0.024kcal/molReviewCox, Wagman, et al., 1984CODATA Review value
Δfgas-22.06kcal/molReviewChase, 1998Data last reviewed in September, 1964
Quantity Value Units Method Reference Comment
gas,1 bar44.671 ± 0.001cal/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar44.670cal/mol*KReviewChase, 1998Data last reviewed in September, 1964

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. to 1200.1200. to 6000.
A 7.6778027.628880
B -3.2165520.765579
C 4.748691-0.129431
D -1.6381310.008586
E -0.011872-0.821827
F -24.28791-25.81621
G 54.6574152.16941
H -22.06310-22.06310
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in September, 1964 Data last reviewed in September, 1964

Phase change data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus161.15KN/ABeckmann and Waentig, 1910Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Ptriple0.13620atmN/AHenderson, Lewis, et al., 1986Uncertainty assigned by TRC = 0.00006 atm; TRC
Quantity Value Units Method Reference Comment
Tc324.68KN/AHenderson, Lewis, et al., 1986Uncertainty assigned by TRC = 0.03 K; TRC
Quantity Value Units Method Reference Comment
Pc81.48atmN/AHenderson, Lewis, et al., 1986Uncertainty assigned by TRC = 0.0813 atm; VP measured up to 219 K and Pc determined from fitted Wagner equation; TRC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
3.87188.CGiauque and Wiebe, 1928AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
122.3 to 188.33.60194535.172-39.847Stull, 1947Coefficents calculated by NIST from author's data.
188.3 to 309.44.56818868.3581.754Stull, 1947Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Reference Comment
4.71127.Ser and Larher, 1990Based on data from 121. to 133. K.; AC
4.68142.Ser and Larher, 1990Based on data from 134. to 150. K.; AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
MS - José A. Martinho Simões

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Reactions 1 to 50

Chlorine anion + Hydrogen chloride = (Chlorine anion • Hydrogen chloride)

By formula: Cl- + HCl = (Cl- • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr29.6 ± 1.0kcal/molN/AMetz, Kitsopoulos, et al., 1988gas phase; Affinity: shift in apparent EA from lesser-solvated ion. Ignores any neutral-neutral bond.; B
Δr23.8 ± 2.0kcal/molTDEqCaldwell and Kebarle, 1985gas phase; B,M
Δr23.1 ± 2.0kcal/molIMRELarson and McMahon, 1984gas phase; B,M
Δr23.70 ± 0.20kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B,M
Δr20.4kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle(Cl-)H2O/HCl, Entropy change calculated or estimated; Keesee and Castleman, 1980; M
Quantity Value Units Method Reference Comment
Δr22.3cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Cl-)SO2; M
Δr23.5cal/mol*KPHPMSYamdagni and Kebarle, 1974gas phase; M
Δr23.5cal/mol*KN/ALarson and McMahon, 1984, 2gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Δr22.8cal/mol*KN/AUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle(Cl-)H2O/HCl, Entropy change calculated or estimated; Keesee and Castleman, 1980; M
Quantity Value Units Method Reference Comment
Δr16.3 ± 2.0kcal/molIMRELarson and McMahon, 1987gas phase; K = 0.60 for HCl..Cl- + DCL <=> DCl..Cl- + HCl, anchored to Larson and McMahon, 1984, 32; B
Δr17.1 ± 2.6kcal/molTDEqCaldwell and Kebarle, 1985gas phase; B
Δr16.0 ± 2.0kcal/molIMRELarson and McMahon, 1984gas phase; B,M
Δr16.70 ± 0.30kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B
Δr13.6kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle(Cl-)H2O/HCl, Entropy change calculated or estimated; Keesee and Castleman, 1980; M

Chlorine anion + Hydrogen cation = Hydrogen chloride

By formula: Cl- + H+ = HCl

Quantity Value Units Method Reference Comment
Δr333.40kcal/molN/AMartin and Hepburn, 1998gas phase; Given: ΔHacid(0K)=116288.7±0.6 cm-1, or 332.486±0.002 kcal/mol; B
Δr333.6 ± 2.1kcal/molG+TSFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Δr329.10kcal/molN/ACheck, Faust, et al., 2001gas phase; FeCC-(q); ; ΔS(EA)=5.0; B
Quantity Value Units Method Reference Comment
Δr328.10 ± 0.10kcal/molH-TSMartin and Hepburn, 1998gas phase; Given: ΔHacid(0K)=116288.7±0.6 cm-1, or 332.486±0.002 kcal/mol; B
Δr328.3 ± 2.0kcal/molIMREFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Δr323.70kcal/molN/ACheck, Faust, et al., 2001gas phase; FeCC-(q); ; ΔS(EA)=5.0; B

(Chlorine anion • Hydrogen chloride) + Hydrogen chloride = (Chlorine anion • 2Hydrogen chloride)

By formula: (Cl- • HCl) + HCl = (Cl- • 2HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr15.20 ± 0.20kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B,M
Δr14.0kcal/molPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Cl- HCl)SO2; M
Quantity Value Units Method Reference Comment
Δr20.4cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Cl- HCl)SO2; M
Δr24.4cal/mol*KPHPMSYamdagni and Kebarle, 1974gas phase; M
Quantity Value Units Method Reference Comment
Δr7.90 ± 0.20kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B

Iodide + Hydrogen chloride = (Iodide • Hydrogen chloride)

By formula: I- + HCl = (I- • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr14.8 ± 2.0kcal/molTDAsCaldwell and Kebarle, 1985gas phase; B,M
Δr14.2kcal/molHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
Δr20.0cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M
Δr22.7cal/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
Δr8.8 ± 2.6kcal/molTDAsCaldwell and Kebarle, 1985gas phase; B

HO4S- + Hydrogen chloride = (HO4S- • Hydrogen chloride)

By formula: HO4S- + HCl = (HO4S- • HCl)

Quantity Value Units Method Reference Comment
Δr15.7 ± 1.0kcal/molTDEqBohringer, Fahey, et al., 1984gas phase; Relative to HOH..HSO4-, Bohringer, Fahey, et al., 1984; B,M
Quantity Value Units Method Reference Comment
Δr15.1cal/mol*KN/ABohringer, Fahey, et al., 1984gas phase; switching reaction(HSO4-)H2O, Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr11.2 ± 1.0kcal/molTDEqBohringer, Fahey, et al., 1984gas phase; Relative to HOH..HSO4-, Bohringer, Fahey, et al., 1984; B,M

(Chlorine anion • Hydrogen chloride • Water) + Hydrogen chloride = (Chlorine anion • 2Hydrogen chloride • Water)

By formula: (Cl- • HCl • H2O) + HCl = (Cl- • 2HCl • H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr12.3kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle,switching reaction(Cl- H2O) HCl, deuterated; Yamdagni and Kebarle, 1974; M
Quantity Value Units Method Reference Comment
Δr20.9cal/mol*KHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle,switching reaction(Cl- H2O) HCl, deuterated; Yamdagni and Kebarle, 1974; M

(Chlorine anion • 2Water) + Hydrogen chloride = (Chlorine anion • Hydrogen chloride • 2Water)

By formula: (Cl- • 2H2O) + HCl = (Cl- • HCl • 2H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr13.0kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle(Cl- 2H2O)H2O, deuterated; Keesee and Castleman, 1980; M
Quantity Value Units Method Reference Comment
Δr21.7cal/mol*KHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle(Cl- 2H2O)H2O, deuterated; Keesee and Castleman, 1980; M

(Bromine anion • Sulfur dioxide) + Hydrogen chloride = (Bromine anion • Hydrogen chloride • Sulfur dioxide)

By formula: (Br- • O2S) + HCl = (Br- • HCl • O2S)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr22.4kcal/molPHPMSCaldwell and Kebarle, 1985gas phase; From thermochemical cycle,switching reaction(Br-)SO2; M
Quantity Value Units Method Reference Comment
Δr18.6cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; From thermochemical cycle,switching reaction(Br-)SO2; M

Bromine anion + Hydrogen chloride = (Bromine anion • Hydrogen chloride)

By formula: Br- + HCl = (Br- • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr19.6 ± 2.0kcal/molTDEqCaldwell and Kebarle, 1985gas phase; B,M
Quantity Value Units Method Reference Comment
Δr22.0cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Br-)SO2; M
Quantity Value Units Method Reference Comment
Δr13.0 ± 2.6kcal/molTDEqCaldwell and Kebarle, 1985gas phase; B

(Chlorine anion • 2Hydrogen chloride) + Hydrogen chloride = (Chlorine anion • 3Hydrogen chloride)

By formula: (Cl- • 2HCl) + HCl = (Cl- • 3HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr11.70 ± 0.30kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B,M
Quantity Value Units Method Reference Comment
Δr23.4cal/mol*KPHPMSYamdagni and Kebarle, 1974gas phase; M
Quantity Value Units Method Reference Comment
Δr4.70 ± 0.30kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B

(Chlorine anion • 3Hydrogen chloride) + Hydrogen chloride = (Chlorine anion • 4Hydrogen chloride)

By formula: (Cl- • 3HCl) + HCl = (Cl- • 4HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr10.30 ± 0.70kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B,M
Quantity Value Units Method Reference Comment
Δr26.7cal/mol*KPHPMSYamdagni and Kebarle, 1974gas phase; M
Quantity Value Units Method Reference Comment
Δr2.3 ± 1.0kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B

(Chlorine anion • 2Hydrogen chloride) + Water = (Chlorine anion • Water • 2Hydrogen chloride)

By formula: (Cl- • 2HCl) + H2O = (Cl- • H2O • 2HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr7.6kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; deuterated, quoted in Keesee and Castleman, 1986; M
Quantity Value Units Method Reference Comment
Δr15.2cal/mol*KHPMSUpschulte, Evans, et al., 1986gas phase; deuterated, quoted in Keesee and Castleman, 1986; M

(Chlorine anion • Hydrogen chloride) + Water = (Chlorine anion • Water • Hydrogen chloride)

By formula: (Cl- • HCl) + H2O = (Cl- • H2O • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr10.5kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; deuterated, quoted in Keesee and Castleman, 1986; M
Quantity Value Units Method Reference Comment
Δr18.7cal/mol*KHPMSUpschulte, Evans, et al., 1986gas phase; deuterated, quoted in Keesee and Castleman, 1986; M

Acetyl chloride + Water = Acetic acid + Hydrogen chloride

By formula: C2H3ClO + H2O = C2H4O2 + HCl

Quantity Value Units Method Reference Comment
Δr-22.58kcal/molCmDevore and O'Neal, 1969liquid phase; Heat of hydrolysis; ALS
Δr-22.06kcal/molCmPritchard and Skinner, 1950liquid phase; Heat of hydrolysis at 298 K, see Carson and Skinner, 1949; ALS
Δr-22.09kcal/molCmCarson and Skinner, 1949liquid phase; ALS

(Chlorine anion • Water • Hydrogen chloride) + Water = (Chlorine anion • 2Water • Hydrogen chloride)

By formula: (Cl- • H2O • HCl) + H2O = (Cl- • 2H2O • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr9.6kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; deuterated, quoted in 86 KEE/CAS; M
Quantity Value Units Method Reference Comment
Δr20.4cal/mol*KHPMSUpschulte, Evans, et al., 1986gas phase; deuterated, quoted in 86 KEE/CAS; M

(Chlorine anion • Sulfur dioxide) + Hydrogen chloride = (Chlorine anion • Hydrogen chloride • Sulfur dioxide)

By formula: (Cl- • O2S) + HCl = (Cl- • HCl • O2S)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr13.9kcal/molPHPMSCaldwell and Kebarle, 1985gas phase; From thermochemical cycle; M
Quantity Value Units Method Reference Comment
Δr19.2cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; From thermochemical cycle; M

Ethane, 1,2-dichloro- = Ethene, chloro- + Hydrogen chloride

By formula: C2H4Cl2 = C2H3Cl + HCl

Quantity Value Units Method Reference Comment
Δr12.1 ± 1.0kcal/molCmBuravtsev, Grigor'ev, et al., 1992gas phase; ALS
Δr19.6kcal/molEqkLevanova, Bushneva, et al., 1979liquid phase; ALS
Δr16.3kcal/molEqkLevanova, Bushneva, et al., 1979gas phase; ALS
Δr16.24kcal/molEqkGhosh and Guha, 1951liquid phase; ALS

(Bromine anion • Hydrogen chloride) + Hydrogen chloride = (Bromine anion • 2Hydrogen chloride)

By formula: (Br- • HCl) + HCl = (Br- • 2HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr12.5kcal/molPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Br-)SO2; M
Quantity Value Units Method Reference Comment
Δr18.4cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Br-)SO2; M

Ethyl Chloride = Ethylene + Hydrogen chloride

By formula: C2H5Cl = C2H4 + HCl

Quantity Value Units Method Reference Comment
Δr22.0kcal/molEqkLevanova, Bushneva, et al., 1979liquid phase; ALS
Δr17.1kcal/molEqkLevanova, Bushneva, et al., 1979gas phase; ALS
Δr17.35 ± 0.50kcal/molEqkHowlett, 1955gas phase; ALS
Δr17.1kcal/molEqkLane, Linnett, et al., 1953gas phase; ALS

Ethane, 1,1,1-trichloro- = Ethene, 1,1-dichloro- + Hydrogen chloride

By formula: C2H3Cl3 = C2H2Cl2 + HCl

Quantity Value Units Method Reference Comment
Δr13.6kcal/molEqkLevanova, Bushneva, et al., 1979liquid phase; ALS
Δr11.7kcal/molEqkLevanova, Bushneva, et al., 1979gas phase; ALS
Δr13.61 ± 0.50kcal/molEqkLevanova, Treger, et al., 1975liquid phase; solvent: Nitrobenzene; Flow reactor at 50°C; ALS

Water + Benzoyl chloride = Benzoic acid + Hydrogen chloride

By formula: H2O + C7H5ClO = C7H6O2 + HCl

Quantity Value Units Method Reference Comment
Δr-8.136 ± 0.050kcal/molCmMoselhy and Pritchard, 1975liquid phase; solvent: Diphenyl-ether; see Carson, Pritchard, et al., 1950 and Davies, Dunning, et al., 1972; ALS
Δr-24.35kcal/molCmCarson, Pritchard, et al., 1950liquid phase; Heat of hydrolysis; ALS

Propane, 2-chloro- = Propene + Hydrogen chloride

By formula: C3H7Cl = C3H6 + HCl

Quantity Value Units Method Reference Comment
Δr17.3 ± 0.2kcal/molEqkNoren and Sunner, 1970gas phase; ALS
Δr17.62 ± 0.15kcal/molEqkKabo and Andreevskii, 1963gas phase; At 415.5 K; ALS
Δr17.45 ± 0.50kcal/molEqkHowlett, 1955gas phase; ALS

Propane, 2-chloro-2-methyl- = 1-Propene, 2-methyl- + Hydrogen chloride

By formula: C4H9Cl = C4H8 + HCl

Quantity Value Units Method Reference Comment
Δr17.7 ± 0.5kcal/molEqkHowlett, 1955gas phase; ALS
Δr17.70kcal/molEqkHowlett, 1951gas phase; Hf-gas-(390) -44.4 kcal/mol; ALS
Δr17.1 ± 0.5kcal/molEqkKistiakowsky and Stauffer, 1937gas phase; ALS

Hydrogen chloride + α-Methylstyrene = Benzene, (1-chloro-1-methylethyl)-

By formula: HCl + C9H10 = C9H11Cl

Quantity Value Units Method Reference Comment
Δr-8.80 ± 0.45kcal/molCmArnett and Pienta, 1980liquid phase; solvent: Methylene chloride; Hydrochlorination; ALS
Δr-12.4 ± 1.1kcal/molCmNesterova, Kovzel, et al., 1977liquid phase; Hydrochlorination; ALS

(Chlorine anion • Water) + Hydrogen chloride = (Chlorine anion • Hydrogen chloride • Water)

By formula: (Cl- • H2O) + HCl = (Cl- • HCl • H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr16.0kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; M
Quantity Value Units Method Reference Comment
Δr21.8cal/mol*KHPMSUpschulte, Evans, et al., 1986gas phase; M

Methyl cation + Hydrogen chloride = (Methyl cation • Hydrogen chloride)

By formula: CH3+ + HCl = (CH3+ • HCl)

Quantity Value Units Method Reference Comment
Δr51.7kcal/molPHPMSMcMahon, Heinis, et al., 1988gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 48.3 kcal/mol; Foster, Williamson, et al., 1974; M

Propane, 2,2-dichloro- = 1-Propene, 2-chloro- + Hydrogen chloride

By formula: C3H6Cl2 = C3H5Cl + HCl

Quantity Value Units Method Reference Comment
Δr15.6kcal/molEqkLevanova, Rodova, et al., 1983liquid phase; Flow reactor; ALS
Δr14.3 ± 0.2kcal/molEqkShevtsova, Rozhnov, et al., 1970gas phase; Heat of Dehydrochlorination at 392 K; ALS

Ethane, 1,2-dichloro- + 2Hydrogen = Ethane + 2Hydrogen chloride

By formula: C2H4Cl2 + 2H2 = C2H6 + 2HCl

Quantity Value Units Method Reference Comment
Δr-34.18 ± 0.23kcal/molChydLacher, Amador, et al., 1967gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -35.32 ± 0.12 kcal/mol; At 250 C; ALS

2Hydrogen + Propane, 1,2-dichloro- = Propane + 2Hydrogen chloride

By formula: 2H2 + C3H6Cl2 = C3H8 + 2HCl

Quantity Value Units Method Reference Comment
Δr-30.24 ± 0.26kcal/molChydLacher, Amador, et al., 1967gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -31.21 ± 0.13 kcal/mol; At 250 C; ALS

2Hydrogen + Methylene chloride = Methane + 2Hydrogen chloride

By formula: 2H2 + CH2Cl2 = CH4 + 2HCl

Quantity Value Units Method Reference Comment
Δr-39.05 ± 0.30kcal/molChydLacher, Amador, et al., 1967gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -40.07 ± 0.30 kcal/mol; At 250 C; ALS

2Hydrogen + Ethane, 1,1-dichloro- = Ethane + 2Hydrogen chloride

By formula: 2H2 + C2H4Cl2 = C2H6 + 2HCl

Quantity Value Units Method Reference Comment
Δr-33.66 ± 0.25kcal/molChydLacher, Amador, et al., 1967gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -34.65 ± 0.12 kcal/mol; At 250C; ALS

Butane, 2,2-dichloro- = 2-Butene, 2-chloro-, (Z)- + Hydrogen chloride

By formula: C4H8Cl2 = C4H7Cl + HCl

Quantity Value Units Method Reference Comment
Δr-2.10 ± 0.02kcal/molEqkLevanova, Rozhnov, et al., 1972gas phase; At 568 K; ALS
Δr13.20 ± 0.06kcal/molEqkLevanova, Rozhnov, et al., 1972gas phase; At 404.5 K; ALS

Butane, 2,2-dichloro- = 2-Butene, 2-chloro-, (E)- + Hydrogen chloride

By formula: C4H8Cl2 = C4H7Cl + HCl

Quantity Value Units Method Reference Comment
Δr-3.3 ± 0.02kcal/molEqkLevanova, Rozhnov, et al., 1972gas phase; At 568 K; ALS
Δr1.2 ± 0.06kcal/molEqkLevanova, Rozhnov, et al., 1972gas phase; At 404.5 K; ALS

2Hydrogen + Ethene, chlorotrifluoro- = 1,1,2-Trifluoroethane + Hydrogen chloride

By formula: 2H2 + C2ClF3 = C2H3F3 + HCl

Quantity Value Units Method Reference Comment
Δr-63.98 ± 0.50kcal/molChydLacher, Kianpour, et al., 1956gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -64.92 kcal/mol; At 410 K; ALS

(Chlorine anion • Hydrogen chloride) + Sulfur dioxide = (Chlorine anion • Sulfur dioxide • Hydrogen chloride)

By formula: (Cl- • HCl) + O2S = (Cl- • O2S • HCl)

Quantity Value Units Method Reference Comment
Δr12.3kcal/molPHPMSCaldwell and Kebarle, 1985gas phase; M
Quantity Value Units Method Reference Comment
Δr18.5cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M

(Bromine anion • Hydrogen chloride) + Sulfur dioxide = (Bromine anion • Sulfur dioxide • Hydrogen chloride)

By formula: (Br- • HCl) + O2S = (Br- • O2S • HCl)

Quantity Value Units Method Reference Comment
Δr12.1kcal/molPHPMSCaldwell and Kebarle, 1985gas phase; M
Quantity Value Units Method Reference Comment
Δr18.6cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M

Butane, 2,3-dichloro- = 2-Butene, 2-chloro-, (Z)- + Hydrogen chloride

By formula: C4H8Cl2 = C4H7Cl + HCl

Quantity Value Units Method Reference Comment
Δr16.5kcal/molEqkLevanova, Rodova, et al., 1974gas phase; ALS
Δr15.90 ± 0.22kcal/molEqkRodova, Levanova, et al., 1973gas phase; At 454 K; ALS

1-Chloro-2-ethoxyethane = Ethene, ethoxy- + Hydrogen chloride

By formula: C4H9ClO = C4H8O + HCl

Quantity Value Units Method Reference Comment
Δr16.30 ± 0.50kcal/molEqkFailes and Stimson, 1967gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = 16.5 kcal/mol; At 450 K; ALS

Ethane, 1,1,1,2-tetrachloro- = Hydrogen chloride + Trichloroethylene

By formula: C2H2Cl4 = HCl + C2HCl3

Quantity Value Units Method Reference Comment
Δr10.5kcal/molEqkLevanova, Bushneva, et al., 1979gas phase; ALS
Δr10.85kcal/molEqkLevanova, Bushneva, et al., 1976liquid phase; At 333 K; ALS

Ethane, pentachloro- = Tetrachloroethylene + Hydrogen chloride

By formula: C2HCl5 = C2Cl4 + HCl

Quantity Value Units Method Reference Comment
Δr10.8 ± 1.1kcal/molEqkLevanova, Bushneva, et al., 1979liquid phase; GC; ALS
Δr9.3kcal/molEqkLevanova, Bushneva, et al., 1979gas phase; ALS

2Hydrogen chloride (g) + Aluminum, chlorodiethyl- (l) = AlCl3 (cr) + 2Ethane (g)

By formula: 2HCl (g) + C4H10AlCl (l) = AlCl3 (cr) + 2C2H6 (g)

Quantity Value Units Method Reference Comment
Δr-63.34 ± 0.79kcal/molRSCShaulov and Shmyreva, 1968The reaction enthalpy was derived from data in Shaulov and Shmyreva, 1968.; MS

Butane, 2,3-dichloro-2-methyl- = 2-Butene, 2-chloro-3-methyl- + Hydrogen chloride

By formula: C5H10Cl2 = C5H9Cl + HCl

Quantity Value Units Method Reference Comment
Δr16.2 ± 0.3kcal/molEqkMeged, Levanova, et al., 1980gas phase; ALS
Δr16.3 ± 1.0kcal/molEqkMeged, Levanova, et al., 1980gas phase; ALS

Fluorine anion + Hydrogen chloride = (Fluorine anion • Hydrogen chloride)

By formula: F- + HCl = (F- • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr60. ± 2.kcal/molICRLarson and McMahon, 1985gas phase; bracketing; M

Butane, 1,1-dichloro- = 1-Butene, 1-chloro-, (Z)- + Hydrogen chloride

By formula: C4H8Cl2 = C4H7Cl + HCl

Quantity Value Units Method Reference Comment
Δr14.6kcal/molEqkLevanova, Rodova, et al., 1974gas phase; ALS
Δr14.61 ± 0.09kcal/molEqkRodova, Shevtsova, et al., 1974gas phase; ALS

Sodium ion (1+) + Hydrogen chloride = (Sodium ion (1+) • Hydrogen chloride)

By formula: Na+ + HCl = (Na+ • HCl)

Quantity Value Units Method Reference Comment
Δr12.2kcal/molFAPerry, Rowe, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
Δr20.4cal/mol*KFAPerry, Rowe, et al., 1980gas phase; M

Ethane, 1,1-dichloro- = Ethene, chloro- + Hydrogen chloride

By formula: C2H4Cl2 = C2H3Cl + HCl

Quantity Value Units Method Reference Comment
Δr17.8kcal/molEqkLevanova, Bushneva, et al., 1979liquid phase; ALS
Δr14.8kcal/molEqkLevanova, Bushneva, et al., 1979gas phase; ALS

Ethane, 1,1,2-trichloro- = Ethene, 1,1-dichloro- + Hydrogen chloride

By formula: C2H3Cl3 = C2H2Cl2 + HCl

Quantity Value Units Method Reference Comment
Δr12.3kcal/molEqkLevanova, Bushneva, et al., 1979gas phase; ALS
Δr15.6kcal/molEqkLevanova, Bushneva, et al., 1979liquid phase; ALS

Ethane, 1,1,2,2-tetrachloro- = Hydrogen chloride + Trichloroethylene

By formula: C2H2Cl4 = HCl + C2HCl3

Quantity Value Units Method Reference Comment
Δr13.2kcal/molEqkLevanova, Bushneva, et al., 1979liquid phase; ALS
Δr10.7kcal/molEqkLevanova, Bushneva, et al., 1979gas phase; ALS

C30H28Fe2Ti (cr) + 2(Hydrogen chloride • 4.40Water) (solution) = 2Ferrocene (cr) + Titanocene dichloride (cr)

By formula: C30H28Fe2Ti (cr) + 2(HCl • 4.40H2O) (solution) = 2C10H10Fe (cr) + C10H10Cl2Ti (cr)

Quantity Value Units Method Reference Comment
Δr-60.6 ± 1.1kcal/molRSCDias, Salema, et al., 1982Please also see Calhorda, Dias, et al., 1987.; MS

Benzoyl chloride, 2-chloro- + Water = Benzoic acid, 2-chloro- + Hydrogen chloride

By formula: C7H4Cl2O + H2O = C7H5ClO2 + HCl

Quantity Value Units Method Reference Comment
Δr-9.50 ± 0.06kcal/molCmMoselhy and Pritchard, 1975liquid phase; solvent: Diphenyl-ether; Heat of hydrolysis; ALS

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to HCl+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)12.744 ± 0.009eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)133.1kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity126.7kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
12.790PEWang, Dillon, et al., 1984LBLHLM
12.752 ± 0.006PEPennetreau, Natalis, et al., 1983LBLHLM
12.748PEVon Niessen, Asbrink, et al., 1982LBLHLM
12.747 ± 0.002PENatalis, Pennetreau, et al., 1982LBLHLM
12.75PEKimura, Katsumata, et al., 1981LLK
12.72 ± 0.03PITiedemann, Anderson, et al., 1979LLK
12.748EVALHuber and Herzberg, 1979LLK
12.748 ± 0.005PEWeiss, Lawrence, et al., 1970RDSH
12.74 ± 0.01PELempka, Passmore, et al., 1968RDSH
12.742 ± 0.010PINicholson, 1965RDSH
12.74 ± 0.01PIWatanabe, 1957RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
Cl+17.34 ± 0.01HPIKrauss, Walker, et al., 1968RDSH
H+14.5Cl-EIFox, 1957RDSH

De-protonation reactions

Chlorine anion + Hydrogen cation = Hydrogen chloride

By formula: Cl- + H+ = HCl

Quantity Value Units Method Reference Comment
Δr333.40kcal/molN/AMartin and Hepburn, 1998gas phase; Given: ΔHacid(0K)=116288.7±0.6 cm-1, or 332.486±0.002 kcal/mol; B
Δr333.6 ± 2.1kcal/molG+TSFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Δr329.10kcal/molN/ACheck, Faust, et al., 2001gas phase; FeCC-(q); ; ΔS(EA)=5.0; B
Quantity Value Units Method Reference Comment
Δr328.10 ± 0.10kcal/molH-TSMartin and Hepburn, 1998gas phase; Given: ΔHacid(0K)=116288.7±0.6 cm-1, or 332.486±0.002 kcal/mol; B
Δr328.3 ± 2.0kcal/molIMREFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Δr323.70kcal/molN/ACheck, Faust, et al., 2001gas phase; FeCC-(q); ; ΔS(EA)=5.0; B

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

Bromine anion + Hydrogen chloride = (Bromine anion • Hydrogen chloride)

By formula: Br- + HCl = (Br- • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr19.6 ± 2.0kcal/molTDEqCaldwell and Kebarle, 1985gas phase; B,M
Quantity Value Units Method Reference Comment
Δr22.0cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Br-)SO2; M
Quantity Value Units Method Reference Comment
Δr13.0 ± 2.6kcal/molTDEqCaldwell and Kebarle, 1985gas phase; B

(Bromine anion • Hydrogen chloride) + Hydrogen chloride = (Bromine anion • 2Hydrogen chloride)

By formula: (Br- • HCl) + HCl = (Br- • 2HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr12.5kcal/molPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Br-)SO2; M
Quantity Value Units Method Reference Comment
Δr18.4cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Br-)SO2; M

(Bromine anion • Sulfur dioxide) + Hydrogen chloride = (Bromine anion • Hydrogen chloride • Sulfur dioxide)

By formula: (Br- • O2S) + HCl = (Br- • HCl • O2S)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr22.4kcal/molPHPMSCaldwell and Kebarle, 1985gas phase; From thermochemical cycle,switching reaction(Br-)SO2; M
Quantity Value Units Method Reference Comment
Δr18.6cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; From thermochemical cycle,switching reaction(Br-)SO2; M

Methyl cation + Hydrogen chloride = (Methyl cation • Hydrogen chloride)

By formula: CH3+ + HCl = (CH3+ • HCl)

Quantity Value Units Method Reference Comment
Δr51.7kcal/molPHPMSMcMahon, Heinis, et al., 1988gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 48.3 kcal/mol; Foster, Williamson, et al., 1974; M

C6H6+ + Hydrogen chloride = (C6H6+ • Hydrogen chloride)

By formula: C6H6+ + HCl = (C6H6+ • HCl)

Quantity Value Units Method Reference Comment
Δr7.3kcal/molPIWalters, Grover, et al., 1985gas phase; M

Chlorine anion + Hydrogen chloride = (Chlorine anion • Hydrogen chloride)

By formula: Cl- + HCl = (Cl- • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr29.6 ± 1.0kcal/molN/AMetz, Kitsopoulos, et al., 1988gas phase; Affinity: shift in apparent EA from lesser-solvated ion. Ignores any neutral-neutral bond.; B
Δr23.8 ± 2.0kcal/molTDEqCaldwell and Kebarle, 1985gas phase; B,M
Δr23.1 ± 2.0kcal/molIMRELarson and McMahon, 1984gas phase; B,M
Δr23.70 ± 0.20kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B,M
Δr20.4kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle(Cl-)H2O/HCl, Entropy change calculated or estimated; Keesee and Castleman, 1980; M
Quantity Value Units Method Reference Comment
Δr22.3cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Cl-)SO2; M
Δr23.5cal/mol*KPHPMSYamdagni and Kebarle, 1974gas phase; M
Δr23.5cal/mol*KN/ALarson and McMahon, 1984, 2gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Δr22.8cal/mol*KN/AUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle(Cl-)H2O/HCl, Entropy change calculated or estimated; Keesee and Castleman, 1980; M
Quantity Value Units Method Reference Comment
Δr16.3 ± 2.0kcal/molIMRELarson and McMahon, 1987gas phase; K = 0.60 for HCl..Cl- + DCL <=> DCl..Cl- + HCl, anchored to Larson and McMahon, 1984, 32; B
Δr17.1 ± 2.6kcal/molTDEqCaldwell and Kebarle, 1985gas phase; B
Δr16.0 ± 2.0kcal/molIMRELarson and McMahon, 1984gas phase; B,M
Δr16.70 ± 0.30kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B
Δr13.6kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle(Cl-)H2O/HCl, Entropy change calculated or estimated; Keesee and Castleman, 1980; M

(Chlorine anion • Hydrogen chloride) + Hydrogen chloride = (Chlorine anion • 2Hydrogen chloride)

By formula: (Cl- • HCl) + HCl = (Cl- • 2HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr15.20 ± 0.20kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B,M
Δr14.0kcal/molPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Cl- HCl)SO2; M
Quantity Value Units Method Reference Comment
Δr20.4cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(Cl- HCl)SO2; M
Δr24.4cal/mol*KPHPMSYamdagni and Kebarle, 1974gas phase; M
Quantity Value Units Method Reference Comment
Δr7.90 ± 0.20kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B

(Chlorine anion • 2Hydrogen chloride) + Hydrogen chloride = (Chlorine anion • 3Hydrogen chloride)

By formula: (Cl- • 2HCl) + HCl = (Cl- • 3HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr11.70 ± 0.30kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B,M
Quantity Value Units Method Reference Comment
Δr23.4cal/mol*KPHPMSYamdagni and Kebarle, 1974gas phase; M
Quantity Value Units Method Reference Comment
Δr4.70 ± 0.30kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B

(Chlorine anion • 3Hydrogen chloride) + Hydrogen chloride = (Chlorine anion • 4Hydrogen chloride)

By formula: (Cl- • 3HCl) + HCl = (Cl- • 4HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr10.30 ± 0.70kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B,M
Quantity Value Units Method Reference Comment
Δr26.7cal/mol*KPHPMSYamdagni and Kebarle, 1974gas phase; M
Quantity Value Units Method Reference Comment
Δr2.3 ± 1.0kcal/molTDAsYamdagni and Kebarle, 1974gas phase; B

(Chlorine anion • Hydrogen chloride • Water) + Hydrogen chloride = (Chlorine anion • 2Hydrogen chloride • Water)

By formula: (Cl- • HCl • H2O) + HCl = (Cl- • 2HCl • H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr12.3kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle,switching reaction(Cl- H2O) HCl, deuterated; Yamdagni and Kebarle, 1974; M
Quantity Value Units Method Reference Comment
Δr20.9cal/mol*KHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle,switching reaction(Cl- H2O) HCl, deuterated; Yamdagni and Kebarle, 1974; M

(Chlorine anion • Water) + Hydrogen chloride = (Chlorine anion • Hydrogen chloride • Water)

By formula: (Cl- • H2O) + HCl = (Cl- • HCl • H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr16.0kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; M
Quantity Value Units Method Reference Comment
Δr21.8cal/mol*KHPMSUpschulte, Evans, et al., 1986gas phase; M

(Chlorine anion • 2Water) + Hydrogen chloride = (Chlorine anion • Hydrogen chloride • 2Water)

By formula: (Cl- • 2H2O) + HCl = (Cl- • HCl • 2H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr13.0kcal/molHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle(Cl- 2H2O)H2O, deuterated; Keesee and Castleman, 1980; M
Quantity Value Units Method Reference Comment
Δr21.7cal/mol*KHPMSUpschulte, Evans, et al., 1986gas phase; From thermochemical cycle(Cl- 2H2O)H2O, deuterated; Keesee and Castleman, 1980; M

(Chlorine anion • Sulfur dioxide) + Hydrogen chloride = (Chlorine anion • Hydrogen chloride • Sulfur dioxide)

By formula: (Cl- • O2S) + HCl = (Cl- • HCl • O2S)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr13.9kcal/molPHPMSCaldwell and Kebarle, 1985gas phase; From thermochemical cycle; M
Quantity Value Units Method Reference Comment
Δr19.2cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; From thermochemical cycle; M

Fluorine anion + Hydrogen chloride = (Fluorine anion • Hydrogen chloride)

By formula: F- + HCl = (F- • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr60. ± 2.kcal/molICRLarson and McMahon, 1985gas phase; bracketing; M

HCl+ + Hydrogen chloride = (HCl+ • Hydrogen chloride)

By formula: HCl+ + HCl = (HCl+ • HCl)

Quantity Value Units Method Reference Comment
Δr20.kcal/molPITiedemann, Anderson, et al., 1979gas phase; M

HO4S- + Hydrogen chloride = (HO4S- • Hydrogen chloride)

By formula: HO4S- + HCl = (HO4S- • HCl)

Quantity Value Units Method Reference Comment
Δr15.7 ± 1.0kcal/molTDEqBohringer, Fahey, et al., 1984gas phase; Relative to HOH..HSO4-, Bohringer, Fahey, et al., 1984; B,M
Quantity Value Units Method Reference Comment
Δr15.1cal/mol*KN/ABohringer, Fahey, et al., 1984gas phase; switching reaction(HSO4-)H2O, Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr11.2 ± 1.0kcal/molTDEqBohringer, Fahey, et al., 1984gas phase; Relative to HOH..HSO4-, Bohringer, Fahey, et al., 1984; B,M

Iodide + Hydrogen chloride = (Iodide • Hydrogen chloride)

By formula: I- + HCl = (I- • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr14.8 ± 2.0kcal/molTDAsCaldwell and Kebarle, 1985gas phase; B,M
Δr14.2kcal/molHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
Δr20.0cal/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M
Δr22.7cal/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
Δr8.8 ± 2.6kcal/molTDAsCaldwell and Kebarle, 1985gas phase; B

Sodium ion (1+) + Hydrogen chloride = (Sodium ion (1+) • Hydrogen chloride)

By formula: Na+ + HCl = (Na+ • HCl)

Quantity Value Units Method Reference Comment
Δr12.2kcal/molFAPerry, Rowe, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
Δr20.4cal/mol*KFAPerry, Rowe, et al., 1980gas phase; M

IR Spectrum

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), References, Notes

Data compiled by: Coblentz Society, Inc.


Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Beckmann and Waentig, 1910
Beckmann, E.; Waentig, P., Cryoscopic Measurements at Low Temperatures, Z. Anorg. Chem., 1910, 67, 17. [all data]

Henderson, Lewis, et al., 1986
Henderson, C.; Lewis, D.G.; Prichard, P.C.; Staveley, L.A.K.; Fonseca, I.M.A.; Lobo, L.Q., Some thermodynamic properties of hydrogen chloride and deuterium chloride, J. Chem. Thermodyn., 1986, 18, 1077. [all data]

Giauque and Wiebe, 1928
Giauque, W.F.; Wiebe, R., THE ENTROPY OF HYDROGEN CHLORIDE. HEAT CAPACITY FROM 16°K. TO BOILING POINT. HEAT OF VAPORIZATION. VAPOR PRESSURES OF SOLID AND LIQUID, J. Am. Chem. Soc., 1928, 50, 1, 101-122, https://doi.org/10.1021/ja01388a013 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Ser and Larher, 1990
Ser, Frederic; Larher, Yves, Sublimation pressures of hydrogen chloride, The Journal of Chemical Thermodynamics, 1990, 22, 4, 407-412, https://doi.org/10.1016/0021-9614(90)90129-E . [all data]

Metz, Kitsopoulos, et al., 1988
Metz, R.B.; Kitsopoulos, T.; Weaver, A.; Neumark, D.M., Study of the Transition State Region in the Cl+HCl Reaction by Photoelectron Spectroscopy of ClHCl-, J. Chem. Phys., 1988, 88, 2, 1463, https://doi.org/10.1063/1.454218 . [all data]

Caldwell and Kebarle, 1985
Caldwell, G.; Kebarle, P., The hydrogen bond energies of the bihalide ions XHX- and YHX-, Can. J. Chem., 1985, 63, 1399. [all data]

Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B., Hydrogen bonding in gas phase anions. An experimental investigation of the interaction between chloride ion and bronsted acids from ICR chloride exchange equilibria, J. Am. Chem. Soc., 1984, 106, 517. [all data]

Yamdagni and Kebarle, 1974
Yamdagni, R.; Kebarle, P., The hydrogen bond energies in ClHCl- and Cl-(HCl)n, Can. J. Chem., 1974, 52, 2449. [all data]

Upschulte, Evans, et al., 1986
Upschulte, B.L.; Evans, D.H.; Keesee, R.G.; Castleman, A.W., Unpublished results, referred to in Keesee and Castleman, 1986, 1986. [all data]

Keesee and Castleman, 1980
Keesee, R.G.; Castleman, A.W., Jr., Gas phase studies of hydration complexes of Cl- and I- and comparison to electrostatic calculations in the gas phase, Chem. Phys. Lett., 1980, 74, 139. [all data]

Larson and McMahon, 1984, 2
Larson, J.W.; McMahon, T.B., Gas phase negative ion chemistry of alkylchloroformates, Can. J. Chem., 1984, 62, 675. [all data]

French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P., Hydrogen bonding of O-H and C-H hydrogen donors to Cl-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl- = RHCl-, Can. J. Chem., 1982, 60, 1907. [all data]

Larson and McMahon, 1987
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Larson and McMahon, 1984, 3
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Notes

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