Nitric acid

Formula: HNO₃
Molecular weight: 63.0128
IUPAC Standard InChI: InChI=1S/HNO3/c2-1(3)4/h(H,2,3,4)
IUPAC Standard InChIKey: GRYLNZFGIOXLOG-UHFFFAOYSA-N
CAS Registry Number: 7697-37-2
Chemical structure:
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Gas phase thermochemistry data

Go To: Top, Phase change data, Reaction thermochemistry data, References, Notes

Quantity	Value	Units	Method	Reference	Comment
Δ_fH°_gas	-32.101	kcal/mol	Review	Chase, 1998	Data last reviewed in June, 1963
Quantity	Value	Units	Method	Reference	Comment
S°_{gas,1 bar}	63.669	cal/mol*K	Review	Chase, 1998	Data last reviewed in June, 1963

Gas Phase Heat Capacity (Shomate Equation)

C_p° = 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
C_p = 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	4.692230	23.29340
B	36.79730	1.297701
C	-27.68590	-0.246101
D	7.858402	0.016241
E	-0.059540	-2.938131
F	-35.10559	-46.00650
G	59.20289	82.17139
H	-32.09990	-32.09990
Reference	Chase, 1998	Chase, 1998
Comment	Data last reviewed in June, 1963	Data last reviewed in June, 1963

Phase change data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, References, Notes

Data compiled by: William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

Δ_vapH (kcal/mol)	Temperature (K)	Reference	Comment
9.23	312.	Holeci, 1966	Based on data from 273. to 356. K.

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, References, Notes

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

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.

Individual Reactions

( • Nitric acid ) + = ( • 2)

By formula: (NO₃^- • HNO₃) + HNO₃ = (NO₃^- • 2HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.3 ± 1.0	kcal/mol	TDAs	Davidson, Fehsenfeld, et al., 1977	gas phase; B,M
Δ_rH°	16.00 ± 0.80	kcal/mol	TDAs	Wlodek, Luczynski, et al., 1980	gas phase; B,M
Δ_rH°	18.4	kcal/mol	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M
Δ_rH°	17.7	kcal/mol	HPMS	Lee, Keesee, et al., 1980	gas phase; M
Δ_rH°	20.0	kcal/mol	ATM	Arnold and Qiu, 1984	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M
Δ_rS°	22.1	cal/mol*K	FA	Davidson, Fehsenfeld, et al., 1977	gas phase; M
Δ_rS°	25.	cal/mol*K	N/A	Arnold and Qiu, 1984	gas phase; Entropy change calculated or estimated; M
Δ_rS°	23.1	cal/mol*K	HPMS	Wlodek, Luczynski, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	11.7 ± 2.2	kcal/mol	TDAs	Davidson, Fehsenfeld, et al., 1977	gas phase; B,M
Δ_rG°	9.00 ± 0.30	kcal/mol	TDAs	Wlodek, Luczynski, et al., 1980	gas phase; B

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
12.6	233.	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M
13.8	250.	ATM	Arnold and Qiu, 1984	gas phase; Entropy change calculated or estimated; M

( • 2 Nitric acid ) + = ( • 3)

By formula: (NO₃^- • 2HNO₃) + HNO₃ = (NO₃^- • 3HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.1 ± 1.0	kcal/mol	TDAs	Davidson, Fehsenfeld, et al., 1977	gas phase; B,M
Δ_rH°	13.9 ± 1.4	kcal/mol	TDAs	Wlodek, Luczynski, et al., 1980	gas phase; B,M
Δ_rH°	16.0	kcal/mol	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M
Δ_rH°	16.0	kcal/mol	HPMS	Lee, Keesee, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M
Δ_rS°	28.9	cal/mol*K	FA	Davidson, Fehsenfeld, et al., 1977	gas phase; M
Δ_rS°	26.7	cal/mol*K	HPMS	Wlodek, Luczynski, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.4 ± 2.2	kcal/mol	TDAs	Davidson, Fehsenfeld, et al., 1977	gas phase; B
Δ_rG°	5.90 ± 0.40	kcal/mol	TDAs	Wlodek, Luczynski, et al., 1980	gas phase; B
Δ_rG°	6.9	kcal/mol	FA	Fehsenfeld, Howard, et al., 1975	gas phase; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
10.2	233.	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

+ = Nitric acid

By formula: NO₃^- + H⁺ = HNO₃

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	324.50 ± 0.20	kcal/mol	TDEq	Davidson, Fehsenfeld, et al., 1977	gas phase; Relative to HBr, reevaluated with current HBr acidity. Excited state at 3.0 eV,81WU /TIE.; B
Δ_rH°	329.9 ± 4.8	kcal/mol	NBAE	Mathur, Rothe, et al., 1976	gas phase; From HNO₃; B
Δ_rH°	329.1 ± 5.8	kcal/mol	Endo	Refaey and Franklin, 1976	gas phase; I^- + HNO₃ ->.; B
Δ_rH°	324.50 ± 0.50	kcal/mol	TDEq	Ferguson, Dunkin, et al., 1972	gas phase; B
Δ_rH°	356.30	kcal/mol	Endo	Berkowitz, Chupka, et al., 1971	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	317.80 ± 0.20	kcal/mol	TDEq	Davidson, Fehsenfeld, et al., 1977	gas phase; Relative to HBr, reevaluated with current HBr acidity. Excited state at 3.0 eV,81WU /TIE.; B

( • Nitric acid ) + = ( • 2)

By formula: (Br^- • HNO₃) + HNO₃ = (Br^- • 2HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.1	kcal/mol	FA	Davidson, Fehsenfeld, et al., 1977	gas phase; From thermochemical cycle(Br-/NO3- - HNO3/HBr), Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.6	cal/mol*K	N/A	Davidson, Fehsenfeld, et al., 1977	gas phase; From thermochemical cycle(Br-/NO3- - HNO3/HBr), Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	11.1	kcal/mol	FA	Davidson, Fehsenfeld, et al., 1977	gas phase; From thermochemical cycle(Br-/NO3- - HNO3/HBr), Entropy change calculated or estimated; M

+ Nitric acid = ( • )

By formula: Br^- + HNO₃ = (Br^- • HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.0	kcal/mol	FA	Davidson, Fehsenfeld, et al., 1977	gas phase; From thermochemical cycle,switching reaction(Br-/NO3-HNO3/HBr), Δ_rH>; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	18.5	cal/mol*K	FA	Davidson, Fehsenfeld, et al., 1977	gas phase; From thermochemical cycle,switching reaction(Br-/NO3-HNO3/HBr), Δ_rH>; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
13.4	367.	FA	Davidson, Fehsenfeld, et al., 1977	gas phase; From thermochemical cycle,switching reaction(Br-/NO3-HNO3/HBr), Δ_rH>; M

( • Nitric acid ) + = ( • • )

By formula: (NO₃^- • HNO₃) + H₂O = (NO₃^- • H₂O • HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.0	kcal/mol	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
7.3	233.	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

(HO₄S^- • 2) + Nitric acid = (HO₄S^- • • 2)

By formula: (HO₄S^- • 2H₂O₄S) + HNO₃ = (HO₄S^- • HNO₃ • 2H₂O₄S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.9	kcal/mol	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
10.3	233.	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

(HO₄S^- • 3) + Nitric acid = (HO₄S^- • • 3)

By formula: (HO₄S^- • 3H₂O₄S) + HNO₃ = (HO₄S^- • HNO₃ • 3H₂O₄S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.9	kcal/mol	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
11.1	233.	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

(HO₄S^- • Nitric acid ) + HO₃S = (HO₄S^- • HO₃S • )

By formula: (HO₄S^- • HNO₃) + HO₃S = (HO₄S^- • HO₃S • HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.7	kcal/mol	ATM	Arnold and Qiu, 1984	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	Arnold and Qiu, 1984	gas phase; Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
15.5	250.	ATM	Arnold and Qiu, 1984	gas phase; Entropy change calculated or estimated; M

(HO₄S^- • Nitric acid ) + = (HO₄S^- • • )

By formula: (HO₄S^- • HNO₃) + H₂O = (HO₄S^- • H₂O • HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.0	kcal/mol	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
7.2	233.	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

(HO₄S^- • Nitric acid ) + = (HO₄S^- • 2)

By formula: (HO₄S^- • HNO₃) + HNO₃ = (HO₄S^- • 2HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.4	kcal/mol	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	25.	cal/mol*K	N/A	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
12.6	233.	ATM	Arnold, Viggiano, et al., 1982	gas phase; Entropy change calculated or estimated; M

( • 3 Nitric acid ) + = ( • 4)

By formula: (NO₃^- • 3HNO₃) + HNO₃ = (NO₃^- • 4HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.3 ± 1.3	kcal/mol	TDAs	Wlodek, Luczynski, et al., 1980	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.9	cal/mol*K	HPMS	Wlodek, Luczynski, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3.20 ± 0.40	kcal/mol	TDAs	Wlodek, Luczynski, et al., 1980	gas phase; B
Δ_rG°	6.9 ± 1.0	kcal/mol	IMRE	Fehsenfeld, Howard, et al., 1975	gas phase; B

( • Nitric acid ) + = ( • • )

By formula: (NO₃^- • HNO₃) + HBr = (NO₃^- • HBr • HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.0	kcal/mol	FA	Davidson, Fehsenfeld, et al., 1977	gas phase; switching reaction(NO3-)2HNO3; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.9	cal/mol*K	FA	Davidson, Fehsenfeld, et al., 1977	gas phase; switching reaction(NO3-)2HNO3; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	9.2	kcal/mol	FA	Davidson, Fehsenfeld, et al., 1977	gas phase; switching reaction(NO3-)2HNO3; M

( • 5 Nitric acid ) + = ( • 6)

By formula: (NO₃^- • 5HNO₃) + HNO₃ = (NO₃^- • 6HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.60 ± 0.90	kcal/mol	TDAs	Wlodek, Luczynski, et al., 1980	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	7.3	cal/mol*K	HPMS	Wlodek, Luczynski, et al., 1980	gas phase; Entropy change is questionable; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.40 ± 0.70	kcal/mol	TDAs	Wlodek, Luczynski, et al., 1980	gas phase; B

( • 4 Nitric acid ) + = ( • 5)

By formula: (NO₃^- • 4HNO₃) + HNO₃ = (NO₃^- • 5HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.4 ± 1.2	kcal/mol	TDAs	Wlodek, Luczynski, et al., 1980	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	18.6	cal/mol*K	HPMS	Wlodek, Luczynski, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1.9 ± 1.0	kcal/mol	TDAs	Wlodek, Luczynski, et al., 1980	gas phase; B

( • ) + Nitric acid = ( • • )

By formula: (NO₃^- • HBr) + HNO₃ = (NO₃^- • HNO₃ • HBr)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.0 ± 2.0	kcal/mol	TDEq	Davidson, Fehsenfeld, et al., 1977	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	9.6 ± 2.8	kcal/mol	TDEq	Davidson, Fehsenfeld, et al., 1977	gas phase; B

+ Nitric acid = +

By formula: C₃H₆N₂O₇ + HNO₃ = C₃H₅N₃O₉ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-1.4 ± 0.3	kcal/mol	Eqk	Kazakov, Kirpichev, et al., 1990	liquid phase; Heat of nitration; ALS
Δ_rH°	-1.3 ± 0.3	kcal/mol	Cm	Kazakov, Lagodzinskaya, et al., 1989	liquid phase; ALS

+ Nitric acid = +

By formula: C₃H₈O₃ + HNO₃ = C₃H₇NO₅ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-4.5 ± 0.5	kcal/mol	Eqk	Kazakov, Kirpichev, et al., 1990	liquid phase; Heat of Nitration; ALS
Δ_rH°	-2.39	kcal/mol	Cm	Tsvetkov, Sopin, et al., 1986	liquid phase; ALS

+ Nitric acid = ( • )

By formula: NO₃^- + HNO₃ = (NO₃^- • HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	24.	cal/mol*K	N/A	Davidson, Fehsenfeld, et al., 1977	gas phase; Entropy change calculated or estimated, DG>, Δ_rH>; M

+ Nitric acid = ( • )

By formula: Na⁺ + HNO₃ = (Na⁺ • HNO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.6	kcal/mol	FA	Perry, Rowe, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.3	cal/mol*K	FA	Perry, Rowe, et al., 1980	gas phase; M

+ Nitric acid = +

By formula: C₃H₇NO₅ + HNO₃ = C₃H₆N₂O₇ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-3.7 ± 0.7	kcal/mol	Eqk	Kazakov, Kirpichev, et al., 1990	liquid phase; Heat of nitration; ALS

+ Nitric acid = +

By formula: C₃H₈O₃ + HNO₃ = C₃H₇NO₅ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-2.5 ± 0.6	kcal/mol	Eqk	Kazakov, Kirpichev, et al., 1990	liquid phase; Heat of nitration; ALS

+ = + Nitric acid

By formula: C₃H₆N₂O₇ + H₂O = C₃H₇NO₅ + HNO₃

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1.7 ± 0.6	kcal/mol	Eqk	Kazakov, Kirpichev, et al., 1990	liquid phase; Heat of nitration; ALS

+ Nitric acid = +

By formula: C₃H₆N₂O₇ + HNO₃ = C₃H₅N₃O₉ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-2.5 ± 0.3	kcal/mol	Eqk	Kazakov, Kirpichev, et al., 1990	liquid phase; Heat of nitration; ALS

+ 2 Nitric acid = + 2

By formula: C₃H₇NO₅ + 2HNO₃ = C₃H₅N₃O₉ + 2H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-4.2 ± 0.3	kcal/mol	Cm	Kazakov, Lagodzinskaya, et al., 1989	liquid phase; ALS

+ 3 Nitric acid = + 3

By formula: C₃H₈O₃ + 3HNO₃ = C₃H₅N₃O₉ + 3H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-8.7 ± 0.4	kcal/mol	Cm	Kazakov, Lagodzinskaya, et al., 1989	liquid phase; ALS

+ Nitric acid = +

By formula: C₄H₁₀O₃ + HNO₃ = C₄H₉NO₅ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-2.70	kcal/mol	Cm	Tsvetkov, Sopin, et al., 1986	liquid phase; ALS

+ Nitric acid = 2 +

By formula: CH₃NO₂ + HNO₃ = 2NO₂ + CH₄O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15.89	kcal/mol	Eqk	Silverwood and Thomas, 1967	gas phase; ALS

+ Nitric acid = C₂F₃NO₄ +

By formula: C₄F₆O₃ + HNO₃ = C₂F₃NO₄ + C₂HF₃O₂

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-6.60	kcal/mol	Cm	Tsvetkov, Shmakov, et al., 1989	liquid phase; ALS

+ Nitric acid = C₅H₁₁NO₆ +

By formula: C₅H₁₂O₄ + HNO₃ = C₅H₁₁NO₆ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-3.70	kcal/mol	Cm	Tsvetkov, Sopin, et al., 1986	liquid phase; ALS

+ Nitric acid = +

By formula: C₂H₆O₂ + HNO₃ = C₂H₅NO₄ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-1.9	kcal/mol	Cm	Tsvetkov, Sopin, et al., 1986	liquid phase; ALS

+ Nitric acid = +

By formula: C₄H₁₀O₃ + HNO₃ = C₄H₉NO₅ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-2.1	kcal/mol	Cm	Tsvetkov, Sopin, et al., 1986	liquid phase; ALS

+ = + Nitric acid

By formula: C₂H₃NO₄ + C₂H₄O₂ = C₄H₆O₃ + HNO₃

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	3.99	kcal/mol	Cm	Tsvetkov, Shmakov, et al., 1989	liquid phase; ALS

+ Nitric acid = +

By formula: C₃H₈O + HNO₃ = C₃H₇NO₃ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-5.59	kcal/mol	Eqk	Rubtsov, 1986	liquid phase; ALS

+ Nitric acid = +

By formula: CH₄O + HNO₃ = CH₃NO₃ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-6.60	kcal/mol	Eqk	Rubtsov, 1986	liquid phase; ALS

+ Nitric acid = +

By formula: C₂H₆O + HNO₃ = C₂H₅NO₃ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-6.00	kcal/mol	Eqk	Rubtsov, 1986	liquid phase; ALS

+ Nitric acid = +

By formula: C₃H₈O + HNO₃ = C₃H₇NO₃ + H₂O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-5.21	kcal/mol	Eqk	Rubtsov, 1986	liquid phase; ALS

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes

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

Holeci, 1966
Holeci, I., Chem. Prum., 1966, 16, 5, 267. [all data]

Davidson, Fehsenfeld, et al., 1977
Davidson, J.A.; Fehsenfeld, F.C.; Howard, C.J., The heats of formation of NO₃- and NO₃- association complexes with HNO₃ and HBr, Int. J. Chem. Kinet., 1977, 9, 17. [all data]

Wlodek, Luczynski, et al., 1980
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Notes

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Symbols used in this document:

S°_{gas,1 bar}	Entropy of gas at standard conditions (1 bar)
T	Temperature
Δ_fH°_gas	Enthalpy of formation of gas at standard conditions
Δ_rG°	Free energy of reaction at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions
Δ_rS°	Entropy of reaction at standard conditions
Δ_vapH	Enthalpy of vaporization

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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