Ozone anion
- Formula: O3-
- Molecular weight: 47.9987
- CAS Registry Number: 12596-80-4
- Information on this page:
- Options:
Gas phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: John E. Bartmess
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -61.13 ± 0.25 | kJ/mol | R-EA | Novich, Engelking, et al., 1979 |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Ion clustering data, Vibrational and/or electronic energy levels, 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. 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
By formula: O3- + N2 = (O3- • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.3 ± 0.84 | kJ/mol | TDAs | Hiraoka, 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 77.0 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -11.7 ± 2.1 | kJ/mol | TDAs | Hiraoka, 1988 | gas phase; B |
By formula: O3- + O2 = (O3- • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.79 ± 0.84 | kJ/mol | TDAs | Hiraoka, 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 79.5 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -15.1 ± 2.1 | kJ/mol | TDAs | Hiraoka, 1988 | gas phase; B |
By formula: (O3- • 4O2) + O2 = (O3- • 5O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.44 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; ΔrH, ΔrS approximate; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 68.6 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; ΔrH, ΔrS approximate; M |
By formula: (O3- • 2N2) + N2 = (O3- • 3N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10.6 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 82.4 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 2O2) + O2 = (O3- • 3O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 83.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 3N2) + N2 = (O3- • 4N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.5 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 3O2) + O2 = (O3- • 4O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 64.4 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 4N2) + N2 = (O3- • 5N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.6 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 78.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 5N2) + N2 = (O3- • 6N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.2 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 79.5 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 6N2) + N2 = (O3- • 7N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.6 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 76.1 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 7N2) + N2 = (O3- • 8N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 73.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 8N2) + N2 = (O3- • 9N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6. ± 2. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 70.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • N2) + N2 = (O3- • 2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 82.0 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • O2) + O2 = (O3- • 2O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 2H2O) + H2O = (O3- • 3H2O)
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
19. | 296. | FA | Fehsenfeld and Ferguson, 1974 | gas phase; M |
By formula: (O3- • H2O) + H2O = (O3- • 2H2O)
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
26. | 296. | FA | Fehsenfeld and Ferguson, 1974 | gas phase; M |
Ion clustering data
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Vibrational and/or electronic energy levels, 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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess
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: (O3- • H2O) + H2O = (O3- • 2H2O)
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
26. | 296. | FA | Fehsenfeld and Ferguson, 1974 | gas phase; M |
By formula: (O3- • 2H2O) + H2O = (O3- • 3H2O)
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
19. | 296. | FA | Fehsenfeld and Ferguson, 1974 | gas phase; M |
By formula: O3- + N2 = (O3- • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.3 ± 0.84 | kJ/mol | TDAs | Hiraoka, 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 77.0 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -11.7 ± 2.1 | kJ/mol | TDAs | Hiraoka, 1988 | gas phase; B |
By formula: (O3- • N2) + N2 = (O3- • 2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 82.0 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 2N2) + N2 = (O3- • 3N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10.6 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 82.4 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 3N2) + N2 = (O3- • 4N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.5 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 4N2) + N2 = (O3- • 5N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.6 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 78.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 5N2) + N2 = (O3- • 6N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.2 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 79.5 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 6N2) + N2 = (O3- • 7N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.6 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 76.1 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 7N2) + N2 = (O3- • 8N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 73.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 8N2) + N2 = (O3- • 9N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6. ± 2. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 70.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: O3- + O2 = (O3- • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.79 ± 0.84 | kJ/mol | TDAs | Hiraoka, 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 79.5 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -15.1 ± 2.1 | kJ/mol | TDAs | Hiraoka, 1988 | gas phase; B |
By formula: (O3- • O2) + O2 = (O3- • 2O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 2O2) + O2 = (O3- • 3O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 83.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 3O2) + O2 = (O3- • 4O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 64.4 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O3- • 4O2) + O2 = (O3- • 5O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.44 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; ΔrH, ΔrS approximate; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 68.6 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; ΔrH, ΔrS approximate; M |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, 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: Marilyn E. Jacox
State: C
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 21420 ± 40 | gas | Hiller and Vestal, 1981 | |||||
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a1 | 1 | Sym. stretch | 760 ± 20 | gas | PF | Hiller and Vestal, 1981 | |
2 | Bend | 190 ± 20 | gas | PF | Hiller and Vestal, 1981 | ||
State: ?
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
Td = 16970 ± 20 | gas | Novich, Engelking, et al., 1979 | |||||
Wang, Woo, et al., 1987 | |||||||
State: A
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 16508 ± 16 | gas | Cosby, Moseley, et al., 1978 | |||||
Hiller and Vestal, 1981 | |||||||
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a1 | 1 | Sym. stretch | 815 ± 10 | gas | PF | Cosby, Moseley, et al., 1978 Hiller and Vestal, 1981 | |
2 | Bend | 275 ± 10 | gas | PF | Cosby, Moseley, et al., 1978 Hiller and Vestal, 1981 | ||
State: X
Additional references: Jacox, 1994, page 109; Jacox, 1998, page 203
Notes
w | Weak |
s | Strong |
o | Energy separation between the v = 0 levels of the excited and electronic ground states. |
d | Photodissociation threshold |
Na | Interaction with sodium. |
Cs | Interaction with cesium |
A | 0~1 cm-1 uncertainty |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Novich, Engelking, et al., 1979
Novich, S.E.; Engelking, P.C.; Jones, P.L.; Futrell, J.H.; Lineberger, W.C.,
Laser photoelectron, photodetachment, and photodestruction spectra of O3-,
J. Chem. Phys., 1979, 70, 2652. [all data]
Hiraoka, 1988
Hiraoka, K.,
Determination of the Stabilities of O3-(N2)n, O3-(O2)n, and O4-(N2)n from Measurements of the Gas Phase Equilibria,
Chem. Phys., 1988, 125, 2-3, 439, https://doi.org/10.1016/0301-0104(88)87096-4
. [all data]
Fehsenfeld and Ferguson, 1974
Fehsenfeld, F.C.; Ferguson, E.E.,
Laboratory studies of negative ion reactions with atmospheric trace constituents,
J. Chem. Phys., 1974, 61, 3181. [all data]
Hiller and Vestal, 1981
Hiller, J.F.; Vestal, M.L.,
Laser Photodissociation of O3- by Triple Quadrupole Mass Spectrometry,
J. Chem. Phys., 1981, 74, 11, 6096, https://doi.org/10.1063/1.441053
. [all data]
Wang, Woo, et al., 1987
Wang, L.J.; Woo, S.B.; Helmy, E.M.,
Laser photodetachment of O_{3} ^{-},
Phys. Rev. A, 1987, 35, 2, 759, https://doi.org/10.1103/PhysRevA.35.759
. [all data]
Cosby, Moseley, et al., 1978
Cosby, P.C.; Moseley, J.T.; Peterson, J.R.; Ling, J.H.,
Photodissociation spectroscopy of O3,
J. Chem. Phys., 1978, 69, 2771. [all data]
Arnold, Xu, et al., 1994
Arnold, D.W.; Xu, C.S.; Kim, E.H.; Neumark, D.M.,
Study of low-lying electronic states of ozone by anion photoelectron spectroscopy of O-3(-),
J. Chem. Phys., 1994, 101, 2, 912, https://doi.org/10.1063/1.467745
. [all data]
Andrews, 1973
Andrews, L.,
Resonance Raman spectrum of the matrix isolated ozonide ion in the species metal(+) ozonide(-),
J. Am. Chem. Soc., 1973, 95, 14, 4487, https://doi.org/10.1021/ja00795a003
. [all data]
Andrews and Spiker, 1973
Andrews, L.; Spiker, R.C., Jr.,
Resonance Raman spectrum and vibrational analysis of the ozonide ion in the argon matrix-isolated M[sup +]O[sub 3][sup -] species,
J. Chem. Phys., 1973, 59, 4, 1863, https://doi.org/10.1063/1.1680271
. [all data]
Spiker and Andrews, 1973
Spiker, R.C., Jr.; Andrews, L.,
Matrix reactions of alkali metal atoms with ozone: Infrared spectra of the alkali metal ozonide molecules,
J. Chem. Phys., 1973, 59, 4, 1851, https://doi.org/10.1063/1.1680270
. [all data]
Bopp, Alexandrova, et al., 2009
Bopp, J.C.; Alexandrova, A.N.; Elliott, B.M.; Herden, T.; Johnson, M.A.,
Vibrational predissociation spectra of the , n=3--10, 12 clusters: Even--odd alternation in the core ion,
Int. J. Mass Spectrom., 2009, 283, 1-3, 94, https://doi.org/10.1016/j.ijms.2009.02.003
. [all data]
Thompson and Jacox, 1989
Thompson, W.E.; Jacox, M.E.,
The vibrational spectra of molecular ions isolated in solid neon. II. O+4 and O-4,
J. Chem. Phys., 1989, 91, 7, 3826, https://doi.org/10.1063/1.456868
. [all data]
Lugez, Thompson, et al., 1996
Lugez, C.L.; Thompson, W.E.; Jacox, M.E.,
Matrix isolation study of the interaction of excited neon atoms with O3: Infrared spectrum of O-3 and evidence for the stabilization of O2•••O+4,
J. Chem. Phys., 1996, 105, 6, 2153, https://doi.org/10.1063/1.472533
. [all data]
Andrews, Ault, et al., 1975
Andrews, L.; Ault, B.S.; Grzybowski, J.M.; Allen, R.O.,
Proton and deuteron radiolysis of argon matrix samples of O2 and Cl2. Infrared spectra of charged species,
J. Chem. Phys., 1975, 62, 6, 2461, https://doi.org/10.1063/1.430723
. [all data]
Wight, Ault, et al., 1976
Wight, C.A.; Ault, B.S.; Andrews, L.,
On microwave discharge sources of new chemical species for matrix-isolation spectroscopy and the identification of charged species,
J. Chem. Phys., 1976, 65, 4, 1244, https://doi.org/10.1063/1.433233
. [all data]
Jacox and Milligan, 1972
Jacox, M.E.; Milligan, D.E.,
Vibrational and electronic spectra of the O3- anion isolated in an argon matrix,
J. Mol. Spectrosc., 1972, 43, 1, 148, https://doi.org/10.1016/0022-2852(72)90167-1
. [all data]
Jacox and Milligan, 1972, 2
Jacox, M.E.; Milligan, D.E.,
Spectrum and structure of the O-3 and O-4 anions isolated in an argon matrix,
Chem. Phys. Lett., 1972, 14, 4, 518, https://doi.org/10.1016/0009-2614(72)80253-7
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
T Temperature ΔfH°gas Enthalpy of formation of gas at standard conditions 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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