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:
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Other names: Monosodium monoxide
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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 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

Temperature (K)	C_p (cal/mol*K)	S° (cal/mol*K)	-(G° - H°_298.15)/T (cal/mol*K)	H° - H°_298.15 (kcal/mol)
298.	8.39	54.76	54.76	-0.00
300.	8.40	54.81	54.76	0.02
400.	8.67	57.27	55.10	0.87
500.	8.81	59.22	55.73	1.74
600.	8.89	60.84	56.45	2.63
700.	8.95	62.21	57.18	3.52
800.	9.00	63.41	57.88	4.42
900.	9.04	64.47	58.56	5.32
1000.	9.07	65.43	59.20	6.23
1100.	9.10	66.29	59.80	7.14
1200.	9.13	67.09	60.38	8.05
1300.	9.16	67.82	60.92	8.96
1400.	9.18	68.50	61.44	9.88
1500.	9.21	69.13	61.93	10.80
1600.	9.23	69.73	62.40	11.72
1700.	9.26	70.29	62.85	12.65
1800.	9.28	70.82	63.28	13.57
1900.	9.30	71.32	63.69	14.50
2000.	9.33	71.80	64.08	15.43
2100.	9.35	72.25	64.46	16.37
2200.	9.37	72.69	64.82	17.30
2300.	9.39	73.11	65.17	18.24
2400.	9.41	73.51	65.51	19.18
2500.	9.43	73.89	65.84	20.12
2600.	9.45	74.26	66.16	21.07
2700.	9.48	74.62	66.46	22.01
2800.	9.50	74.96	66.76	22.96
2900.	9.52	75.30	67.05	23.91
3000.	9.54	75.62	67.33	24.87
3100.	9.56	75.93	67.60	25.82
3200.	9.58	76.24	67.87	26.78
3300.	9.60	76.53	68.13	27.74
3400.	9.62	76.82	68.38	28.70
3500.	9.64	77.10	68.62	29.66
3600.	9.66	77.37	68.86	30.62
3700.	9.68	77.63	69.10	31.59
3800.	9.70	77.89	69.32	32.56
3900.	9.72	78.14	69.55	33.53
4000.	9.74	78.39	69.76	34.50
4100.	9.76	78.63	69.98	35.48
4200.	9.78	78.87	70.19	36.45
4300.	9.80	79.10	70.39	37.43
4400.	9.82	79.32	70.59	38.41
4500.	9.84	79.54	70.79	39.40
4600.	9.86	79.76	70.98	40.38
4700.	9.88	79.97	71.17	41.37
4800.	9.90	80.18	71.36	42.36
4900.	9.92	80.38	71.54	43.35
5000.	9.94	80.58	71.72	44.34
5100.	9.96	80.78	71.89	45.33
5200.	9.98	80.97	72.06	46.33
5300.	10.0	81.16	72.23	47.33
5400.	10.02	81.35	72.40	48.33
5500.	10.04	81.54	72.57	49.33
5600.	10.06	81.72	72.73	50.34
5700.	10.08	81.90	72.89	51.35
5800.	10.10	82.07	73.04	52.35
5900.	10.12	82.24	73.20	53.37
6000.	10.14	82.41	73.35	54.38

References

Go To: Top, Gas Phase Heat Capacity (Shomate Equation), 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]

Notes

Go To: Top, Gas Phase Heat Capacity (Shomate Equation), References

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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