sodium oxide
- Formula: NaO
- Molecular weight: 38.9892
- IUPAC Standard InChI: InChI=1S/Na.O
- IUPAC Standard InChIKey: IVAOQJNBYYIDSI-UHFFFAOYSA-N
- CAS Registry Number: 12401-86-4
- 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. - Other names: Monosodium monoxide
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics data, 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 |
|---|---|---|---|---|---|
| ΔfH°gas | 20.00 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1967 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 54.763 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1967 |
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 6000. |
|---|---|
| A | 8.887211 |
| B | 0.246751 |
| C | -0.012721 |
| D | 0.001085 |
| E | -0.050559 |
| F | 17.16990 |
| G | 65.15980 |
| H | 20.00000 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1967 |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry 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 as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 7.41 | S | Butman, Kudin, et al., 1984 | LBLHLM |
| 6.5 ± 0.7 | EI | Hildenbrand and Murad, 1970 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Butman, Kudin, et al., 1984
Butman, M.F.; Kudin, L.S.; Krasnov, K.S.,
The Mass-spectrometric determination of the proton affinity of the molecules M2O (M = Na, K, Rb, Cs),
Russ. J. Inorg. Chem., 1984, 29, 1228, In original 2150. [all data]
Hildenbrand and Murad, 1970
Hildenbrand, D.L.; Murad, E.,
Dissociation energy of NaO(g) and the heat of atomization of Na2O(g),
J. Chem. Phys., 1970, 53, 3403. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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