Hydrogen chloride
- Formula: ClH
- Molecular weight: 36.461
- IUPAC Standard InChIKey: VEXZGXHMUGYJMC-UHFFFAOYSA-N
- CAS Registry Number: 7647-01-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- Other names: Hydrochloric ccid; Anhydrous hydrochloric acid; Chlorohydric acid; Hydrochloric acid gas; Hydrochloride; Muriatic acid; Salzsaeure; HCl; Hydrochloric acid, anhydrous; Hydrogen-chloride-anhydrous-; Acide chlorhydrique; Acido cloridrico; Chloorwaterstof; Chlorowodor; Chlorwasserstoff; NA 1789; Spirits of salt; UN 1050; UN 1789; UN 2186; Anhydrous hydrogen chloride; Hydrogen chloride (acid); Marine acid; Soldering acid; Spirit of salt; Spirits of salts; Hydrogen chloride (HCl); NSC 77365; Hydrochloric acid
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Ion clustering data
Go To: Top, 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
By formula: Br- + HCl = (Br- • HCl)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 82.0 ± 8.4 | kJ/mol | TDEq | Caldwell and Kebarle, 1985 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92.0 | J/mol*K | PHPMS | Caldwell and Kebarle, 1985 | gas phase; switching reaction(Br-)SO2; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 54. ± 11. | kJ/mol | TDEq | Caldwell and Kebarle, 1985 | gas phase; B |
By formula: (Br- • HCl) + HCl = (Br- • 2HCl)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 52.3 | kJ/mol | PHPMS | Caldwell and Kebarle, 1985 | gas phase; switching reaction(Br-)SO2; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 77.0 | J/mol*K | PHPMS | Caldwell and Kebarle, 1985 | gas phase; switching reaction(Br-)SO2; M |
By formula: (Br- • O2S) + HCl = (Br- • HCl • O2S)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 93.7 | kJ/mol | PHPMS | Caldwell and Kebarle, 1985 | gas phase; From thermochemical cycle,switching reaction(Br-)SO2; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 77.8 | J/mol*K | PHPMS | Caldwell and Kebarle, 1985 | gas phase; From thermochemical cycle,switching reaction(Br-)SO2; M |
By formula: CH3+ + HCl = (CH3+ • HCl)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 216. | kJ/mol | PHPMS | McMahon, Heinis, et al., 1988 | gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 202. kJ/mol; Foster, Williamson, et al., 1974; M |
By formula: C6H6+ + HCl = (C6H6+ • HCl)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 31. | kJ/mol | PI | Walters, Grover, et al., 1985 | gas phase; M |
By formula: Cl- + HCl = (Cl- • HCl)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 124. ± 4.2 | kJ/mol | N/A | Metz, Kitsopoulos, et al., 1988 | gas phase; Affinity: shift in apparent EA from lesser-solvated ion. Ignores any neutral-neutral bond.; B |
ΔrH° | 99.6 ± 8.4 | kJ/mol | TDEq | Caldwell and Kebarle, 1985 | gas phase; B,M |
ΔrH° | 96.7 ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1984 | gas phase; B,M |
ΔrH° | 99.16 ± 0.84 | kJ/mol | TDAs | Yamdagni and Kebarle, 1974 | gas phase; B,M |
ΔrH° | 85.4 | kJ/mol | HPMS | Upschulte, Evans, et al., 1986 | gas phase; From thermochemical cycle(Cl-)H2O/HCl, Entropy change calculated or estimated; Keesee and Castleman, 1980; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 93.3 | J/mol*K | PHPMS | Caldwell and Kebarle, 1985 | gas phase; switching reaction(Cl-)SO2; M |
ΔrS° | 98.3 | J/mol*K | PHPMS | Yamdagni and Kebarle, 1974 | gas phase; M |
ΔrS° | 98.3 | J/mol*K | N/A | Larson and McMahon, 1984, 2 | gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M |
ΔrS° | 95.4 | J/mol*K | N/A | Upschulte, Evans, et al., 1986 | gas phase; From thermochemical cycle(Cl-)H2O/HCl, Entropy change calculated or estimated; Keesee and Castleman, 1980; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 68.2 ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1987 | gas phase; K = 0.60 for HCl..Cl- + DCL <=> DCl..Cl- + HCl, anchored to Larson and McMahon, 1984, 32; B |
ΔrG° | 72. ± 11. | kJ/mol | TDEq | Caldwell and Kebarle, 1985 | gas phase; B |
ΔrG° | 66.9 ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1984 | gas phase; B,M |
ΔrG° | 69.9 ± 1.3 | kJ/mol | TDAs | Yamdagni and Kebarle, 1974 | gas phase; B |
ΔrG° | 56.9 | kJ/mol | HPMS | Upschulte, Evans, et al., 1986 | gas phase; From thermochemical cycle(Cl-)H2O/HCl, Entropy change calculated or estimated; Keesee and Castleman, 1980; M |
By formula: (Cl- • HCl) + HCl = (Cl- • 2HCl)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 63.60 ± 0.84 | kJ/mol | TDAs | Yamdagni and Kebarle, 1974 | gas phase; B,M |
ΔrH° | 58.6 | kJ/mol | PHPMS | Caldwell and Kebarle, 1985 | gas phase; switching reaction(Cl- HCl)SO2; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 85.4 | J/mol*K | PHPMS | Caldwell and Kebarle, 1985 | gas phase; switching reaction(Cl- HCl)SO2; M |
ΔrS° | 102. | J/mol*K | PHPMS | Yamdagni and Kebarle, 1974 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 33.1 ± 0.84 | kJ/mol | TDAs | Yamdagni and Kebarle, 1974 | gas phase; B |
By formula: (Cl- • 2HCl) + HCl = (Cl- • 3HCl)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 49.0 ± 1.3 | kJ/mol | TDAs | Yamdagni and Kebarle, 1974 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 97.9 | J/mol*K | PHPMS | Yamdagni and Kebarle, 1974 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 19.7 ± 1.3 | kJ/mol | TDAs | Yamdagni and Kebarle, 1974 | gas phase; B |
By formula: (Cl- • 3HCl) + HCl = (Cl- • 4HCl)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.1 ± 2.9 | kJ/mol | TDAs | Yamdagni and Kebarle, 1974 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 112. | J/mol*K | PHPMS | Yamdagni and Kebarle, 1974 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 9.6 ± 4.2 | kJ/mol | TDAs | Yamdagni and Kebarle, 1974 | gas phase; B |
By formula: (Cl- • HCl • H2O) + HCl = (Cl- • 2HCl • H2O)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.5 | kJ/mol | HPMS | Upschulte, Evans, et al., 1986 | gas phase; From thermochemical cycle,switching reaction(Cl- H2O) HCl, deuterated; Yamdagni and Kebarle, 1974; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 87.4 | J/mol*K | HPMS | Upschulte, Evans, et al., 1986 | gas phase; From thermochemical cycle,switching reaction(Cl- H2O) HCl, deuterated; Yamdagni and Kebarle, 1974; M |
By formula: (Cl- • H2O) + HCl = (Cl- • HCl • H2O)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 66.9 | kJ/mol | HPMS | Upschulte, Evans, et al., 1986 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 91.2 | J/mol*K | HPMS | Upschulte, Evans, et al., 1986 | gas phase; M |
By formula: (Cl- • 2H2O) + HCl = (Cl- • HCl • 2H2O)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 54.4 | kJ/mol | HPMS | Upschulte, Evans, et al., 1986 | gas phase; From thermochemical cycle(Cl- 2H2O)H2O, deuterated; Keesee and Castleman, 1980; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 90.8 | J/mol*K | HPMS | Upschulte, Evans, et al., 1986 | gas phase; From thermochemical cycle(Cl- 2H2O)H2O, deuterated; Keesee and Castleman, 1980; M |
By formula: (Cl- • O2S) + HCl = (Cl- • HCl • O2S)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 58.2 | kJ/mol | PHPMS | Caldwell and Kebarle, 1985 | gas phase; From thermochemical cycle; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 80.3 | J/mol*K | PHPMS | Caldwell and Kebarle, 1985 | gas phase; From thermochemical cycle; M |
By formula: F- + HCl = (F- • HCl)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 250. ± 8. | kJ/mol | ICR | Larson and McMahon, 1985 | gas phase; bracketing; M |
By formula: HCl+ + HCl = (HCl+ • HCl)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 84. | kJ/mol | PI | Tiedemann, Anderson, et al., 1979 | gas phase; M |
By formula: HO4S- + HCl = (HO4S- • HCl)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 65.7 ± 4.2 | kJ/mol | TDEq | Bohringer, Fahey, et al., 1984 | gas phase; Relative to HOH..HSO4-, Bohringer, Fahey, et al., 1984; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 63.2 | J/mol*K | N/A | Bohringer, Fahey, et al., 1984 | gas phase; switching reaction(HSO4-)H2O, Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 46.9 ± 4.2 | kJ/mol | TDEq | Bohringer, Fahey, et al., 1984 | gas phase; Relative to HOH..HSO4-, Bohringer, Fahey, et al., 1984; B,M |
By formula: I- + HCl = (I- • HCl)
Bond type: Hydrogen bond (negative ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 61.9 ± 8.4 | kJ/mol | TDAs | Caldwell and Kebarle, 1985 | gas phase; B,M |
ΔrH° | 59.4 | kJ/mol | HPMS | Keesee, Lee, et al., 1980 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 83.7 | J/mol*K | PHPMS | Caldwell and Kebarle, 1985 | gas phase; M |
ΔrS° | 95.0 | J/mol*K | HPMS | Keesee, Lee, et al., 1980 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 37. ± 11. | kJ/mol | TDAs | Caldwell and Kebarle, 1985 | gas phase; B |
By formula: Na+ + HCl = (Na+ • HCl)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.0 | kJ/mol | FA | Perry, Rowe, et al., 1980 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 85.4 | J/mol*K | FA | Perry, Rowe, et al., 1980 | gas phase; M |
References
Go To: Top, Ion clustering data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
McMahon, Heinis, et al., 1988
McMahon, T.; Heinis, T.; Nicol, G.; Hovey, J.K.; Kebarle, P.,
Methyl Cation Affinities,
J. Am. Chem. Soc., 1988, 110, 23, 7591, https://doi.org/10.1021/ja00231a002
. [all data]
Foster, Williamson, et al., 1974
Foster, M.S.; Williamson, A.D.; Beauchamp, J.L.,
Photoionization mass spectrometry of trans-azomethane,
Int. J. Mass Spectrom. Ion Phys., 1974, 15, 429. [all data]
Walters, Grover, et al., 1985
Walters, E.A.; Grover, J.R.; White, M.G.; Hui, E.T.,
On the Structure and Thermochemistry of the van der Waals Molecule C6H6.HCl and its Photoion (C6H6.HCl)+,
J. Phys. Chem., 1985, 89, 18, 3814, https://doi.org/10.1021/j100264a009
. [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]
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
Larson, J.W.; McMahon, T.B.,
Isotope Effects in Proton Transfer Reactions. An Ion Cyclotron Resonance Determination of the Equilibrium Deuterium Isotope Effect in the Bichloride Ion,
J. Phys. Chem., 1987, 91, 3, 554, https://doi.org/10.1021/j100287a013
. [all data]
Larson and McMahon, 1984, 3
Larson, J.W.; McMahon, T.B.,
Fluoride and chloride affinities of main group oxides, fluorides, oxofluorides, and alkyls. Quantitative scales of lewis acidities from ion cyclotron resonance halide-exchange equilibria,
J. Phys. Chem., 1984, 88, 1083. [all data]
Larson and McMahon, 1985
Larson, J.W.; McMahon, T.B.,
Fluoride and chloride affinities of the main group oxides, fluorides, oxofluorides, and alkyls. Quantitative scales of lewis acidities from ICR halide exchange equilibria,
J. Am. Chem. Soc., 1985, 107, 766. [all data]
Tiedemann, Anderson, et al., 1979
Tiedemann, P.W.; Anderson, S.L.; Ceyer, S.T.; Hirooka, T.; Ng, C.Y.; Mahan, B.H.; Lee, Y.T.,
Proton affinities of hydrogen halides determined by the molecular beam photoionization method,
J. Chem. Phys., 1979, 71, 605. [all data]
Bohringer, Fahey, et al., 1984
Bohringer, H.; Fahey, D.W.; Fehsenfeld, F.C.; Ferguson, E.E.,
Bond energies of the molecules H2O, SO2, H2O2, and HCl to various atmospheric negative ions,
J. Chem. Phys., 1984, 81, 2805. [all data]
Keesee, Lee, et al., 1980
Keesee, R.G.; Lee, N.; Castleman, A.W., Jr.,
Properties of clusters in the gas phase: V. Complexes of neutral molecules onto negative ions,
J. Chem. Phys., 1980, 73, 2195. [all data]
Perry, Rowe, et al., 1980
Perry, R.A.; Rowe, B.R.; Viggiano, A.A.; Albritton, D.L.; Ferguson, E.E.; Fehsenfeld, F.C.,
Laboratory Measurements of Stratospheric Sodium Ion Measurements,
Geophys. Res. Lett., 1980, 7, 9, 693, https://doi.org/10.1029/GL007i009p00693
. [all data]
Keesee and Castleman, 1986
Keesee, R.G.; Castleman, A.W., Jr.,
Thermochemical data on Ggs-phase ion-molecule association and clustering reactions,
J. Phys. Chem. Ref. Data, 1986, 15, 1011. [all data]
Notes
Go To: Top, Ion clustering data, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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