Chromium monoxide

Formula: CrO
Molecular weight: 67.9955
IUPAC Standard InChI: InChI=1S/Cr.O
IUPAC Standard InChIKey: XVOFZWCCFLVFRR-UHFFFAOYSA-N
CAS Registry Number: 12018-00-7
Chemical structure:
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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. - 1400.	1400. - 6000.
A	6.570459	9.718829
B	5.104432	-0.531253
C	-3.959140	0.162464
D	1.091230	-0.010756
E	-0.025572	-0.658077
F	42.76109	40.71310
G	63.63740	67.27560
H	45.00000	45.00000
Reference	Chase, 1998	Chase, 1998
Comment	Data last reviewed in December, 1973	Data last reviewed in December, 1973

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.	7.48	57.18	57.19	-0.00
300.	7.49	57.23	57.19	0.01
400.	7.89	59.45	57.48	0.78
500.	8.17	61.24	58.06	1.59
600.	8.37	62.75	58.72	2.42
700.	8.53	64.05	59.39	3.26
800.	8.64	65.19	60.05	4.12
900.	8.72	66.22	60.68	4.99
1000.	8.78	67.14	61.28	5.86
1100.	8.83	67.98	61.85	6.74
1200.	8.86	68.75	62.39	7.63
1300.	8.90	69.46	62.91	8.52
1400.	8.94	70.12	63.40	9.41

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)
1400.	8.93	70.12	63.40	9.41
1500.	8.96	70.74	63.87	10.30
1600.	8.98	71.32	64.32	11.20
1700.	9.00	71.86	64.74	12.10
1800.	9.02	72.38	65.15	13.00
1900.	9.04	72.86	65.55	13.90
2000.	9.06	73.33	65.92	14.81
2100.	9.07	73.77	66.29	15.71
2200.	9.09	74.19	66.64	16.62
2300.	9.10	74.60	66.97	17.53
2400.	9.12	74.98	67.30	18.44
2500.	9.13	75.36	67.62	19.35
2600.	9.15	75.72	67.92	20.27
2700.	9.17	76.06	68.22	21.18
2800.	9.18	76.39	68.50	22.10
2900.	9.20	76.72	68.78	23.02
3000.	9.22	77.03	69.05	23.94
3100.	9.24	77.33	69.31	24.87
3200.	9.27	77.63	69.57	25.79
3300.	9.29	77.91	69.82	26.72
3400.	9.31	78.19	70.06	27.65
3500.	9.33	78.46	70.29	28.58
3600.	9.36	78.72	70.52	29.52
3700.	9.38	78.98	70.75	30.45
3800.	9.41	79.23	70.97	31.39
3900.	9.44	79.48	71.18	32.34
4000.	9.46	79.71	71.39	33.28
4100.	9.49	79.95	71.60	34.23
4200.	9.52	80.18	71.80	35.18
4300.	9.55	80.40	72.00	36.13
4400.	9.58	80.62	72.19	37.09
4500.	9.61	80.84	72.38	38.05
4600.	9.63	81.05	72.57	39.01
4700.	9.66	81.26	72.75	39.97
4800.	9.69	81.46	72.93	40.94
4900.	9.72	81.66	73.11	41.91
5000.	9.75	81.86	73.28	42.89
5100.	9.78	82.05	73.45	43.86
5200.	9.81	82.24	73.62	44.84
5300.	9.84	82.43	73.78	45.83
5400.	9.87	82.61	73.94	46.81
5500.	9.90	82.79	74.10	47.80
5600.	9.93	82.97	74.26	48.79
5700.	9.96	83.15	74.41	49.79
5800.	9.98	83.32	74.57	50.78
5900.	10.01	83.49	74.72	51.78
6000.	10.04	83.66	74.86	52.79

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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