boron carbide

Formula: CB
Molecular weight: 22.822
IUPAC Standard InChI: InChI=1S/CB/c1-2
IUPAC Standard InChIKey: UPGPUHVYNXOPJN-UHFFFAOYSA-N
CAS Registry Number: 12011-54-0
Chemical structure:
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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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.

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Temperature (K)	298. - 1100.	1100. - 6000.
A	19.19807	36.89732
B	35.92064	0.624023
C	-27.53189	-0.058068
D	7.805629	0.004012
E	0.180789	-1.929339
F	821.9468	812.5788
G	223.2507	246.3577
H	828.4320	828.4320
Reference	Chase, 1998	Chase, 1998
Comment	Data last reviewed in June, 1963	Data last reviewed in June, 1963

Temperature (K)	C_p (J/mol*K)	S° (J/mol*K)	-(G° - H°_298.15)/T (J/mol*K)	H° - H°_298.15 (kJ/mol)
298.	29.70	208.5	208.6	-0.00
300.	29.72	208.7	208.6	0.06
400.	30.79	217.4	209.7	3.08
500.	31.97	224.4	212.0	6.22
600.	33.03	230.4	214.6	9.47
700.	33.90	235.5	217.2	12.82
800.	34.59	240.1	219.8	16.24
900.	35.14	244.2	222.3	19.73
1000.	35.57	247.9	224.7	23.27
1100.	35.94	251.3	226.9	26.84

Temperature (K)	C_p (J/mol*K)	S° (J/mol*K)	-(G° - H°_298.15)/T (J/mol*K)	H° - H°_298.15 (kJ/mol)
1100.	35.92	251.3	226.9	26.84
1200.	36.23	254.5	229.1	30.45
1300.	36.48	257.4	231.2	34.09
1400.	36.68	260.1	233.1	37.74
1500.	36.86	262.6	235.0	41.42
1600.	37.01	265.0	236.8	45.11
1700.	37.14	267.3	238.5	48.82
1800.	37.26	269.4	240.2	52.54
1900.	37.37	271.4	241.8	56.27
2000.	37.46	273.3	243.3	60.02
2100.	37.55	275.1	244.8	63.77
2200.	37.63	276.9	246.2	67.53
2300.	37.71	278.6	247.6	71.29
2400.	37.78	280.2	248.9	75.07
2500.	37.85	281.7	250.2	78.85
2600.	37.91	283.2	251.4	82.64
2700.	37.97	284.6	252.6	86.43
2800.	38.03	286.0	253.8	90.23
2900.	38.09	287.4	254.9	94.04
3000.	38.14	288.6	256.0	97.85
3100.	38.19	289.9	257.1	101.7
3200.	38.24	291.1	258.1	105.5
3300.	38.29	292.3	259.2	109.3
3400.	38.34	293.4	260.2	113.1
3500.	38.38	294.5	261.1	117.0
3600.	38.43	295.6	262.1	120.8
3700.	38.47	296.7	263.0	124.7
3800.	38.52	297.7	263.9	128.5
3900.	38.56	298.7	264.8	132.4
4000.	38.60	299.7	265.6	136.2
4100.	38.64	300.6	266.5	140.1
4200.	38.68	301.6	267.3	144.0
4300.	38.72	302.5	268.1	147.8
4400.	38.76	303.4	268.9	151.7
4500.	38.80	304.2	269.7	155.6
4600.	38.84	305.1	270.4	159.5
4700.	38.88	305.9	271.2	163.3
4800.	38.91	306.8	271.9	167.2
4900.	38.95	307.6	272.6	171.1
5000.	38.99	308.3	273.3	175.0
5100.	39.03	309.1	274.0	178.9
5200.	39.06	309.9	274.7	182.8
5300.	39.10	310.6	275.4	186.7
5400.	39.14	311.3	276.0	190.7
5500.	39.18	312.1	276.7	194.6
5600.	39.21	312.8	277.3	198.5
5700.	39.25	313.5	278.0	202.4
5800.	39.29	314.2	278.6	206.3
5900.	39.33	314.8	279.2	210.3
6000.	39.36	315.5	279.8	214.2

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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