Beryllium carbide

Formula: C₂Be
Molecular weight: 33.0336
CAS Registry Number: 12070-28-9
Information on this page:
Other data available:
- Gas phase thermochemistry data
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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 1200.	1200. to 6000.
A	7.080631	14.35260
B	10.45020	0.294834
C	-5.157630	-0.057714
D	0.817819	0.003896
E	0.009832	-1.468831
F	132.5020	127.3390
G	57.98819	65.13169
H	135.0000	135.0000
Reference	Chase, 1998	Chase, 1998
Comment	Data last reviewed in December, 1963	Data last reviewed in December, 1963

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.	9.87	52.25	52.26	-0.00
300.	9.88	52.32	52.26	0.02
400.	10.55	55.25	52.65	1.04
500.	11.16	57.68	53.42	2.13
600.	11.70	59.76	54.31	3.27
700.	12.17	61.60	55.22	4.46
800.	12.57	63.25	56.12	5.70
900.	12.92	64.75	57.00	6.98
1000.	13.20	66.13	57.84	8.28
1100.	13.43	67.40	58.66	9.62
1200.	13.61	68.57	59.43	10.97

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)
1200.	13.61	68.57	59.43	10.97
1300.	13.78	69.67	60.18	12.34
1400.	13.91	70.70	60.89	13.72
1500.	14.03	71.66	61.58	15.12
1600.	14.12	72.57	62.24	16.53
1700.	14.20	73.43	62.87	17.94
1800.	14.27	74.24	63.48	19.37
1900.	14.32	75.01	64.07	20.79
2000.	14.38	75.75	64.63	22.23
2100.	14.42	76.45	65.18	23.67
2200.	14.46	77.12	65.71	25.11
2300.	14.50	77.77	66.22	26.56
2400.	14.53	78.38	66.71	28.01
2500.	14.55	78.98	67.19	29.47
2600.	14.58	79.55	67.66	30.92
2700.	14.60	80.10	68.11	32.38
2800.	14.62	80.63	68.54	33.84
2900.	14.64	81.14	68.97	35.31
3000.	14.66	81.64	69.38	36.77
3100.	14.68	82.12	69.79	38.24
3200.	14.69	82.59	70.18	39.71
3300.	14.70	83.04	70.56	41.18
3400.	14.71	83.48	70.94	42.65
3500.	14.72	83.91	71.30	44.12
3600.	14.73	84.32	71.66	45.59
3700.	14.74	84.72	72.00	47.07
3800.	14.75	85.12	72.34	48.54
3900.	14.76	85.50	72.68	50.02
4000.	14.77	85.88	73.00	51.49
4100.	14.77	86.24	73.32	52.97
4200.	14.78	86.60	73.63	54.45
4300.	14.78	86.94	73.94	55.93
4400.	14.79	87.28	74.24	57.40
4500.	14.79	87.62	74.53	58.88
4600.	14.80	87.94	74.82	60.36
4700.	14.80	88.26	75.10	61.84
4800.	14.81	88.57	75.38	63.32
4900.	14.81	88.88	75.65	64.80
5000.	14.81	89.18	75.92	66.29
5100.	14.82	89.47	76.18	67.77
5200.	14.82	89.76	76.44	69.25
5300.	14.82	90.04	76.69	70.73
5400.	14.82	90.32	76.94	72.21
5500.	14.83	90.59	77.19	73.70
5600.	14.83	90.86	77.43	75.18
5700.	14.83	91.12	77.67	76.66
5800.	14.84	91.38	77.90	78.15
5900.	14.84	91.63	78.13	79.63
6000.	14.84	91.88	78.36	81.11

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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