boron carbide
- Formula: CB4
- Molecular weight: 55.255
- IUPAC Standard InChI: InChI=1S/CB4/c2-1-3(2)5(1)4(1)2
- IUPAC Standard InChIKey: INAHAJYZKVIDIZ-UHFFFAOYSA-N
- CAS Registry Number: 12069-32-8
- Chemical structure:
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Solid Phase Heat Capacity (Shomate Equation)
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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 (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. - 2743. |
|---|---|
| A | 95.99853 |
| B | 23.16513 |
| C | -0.409604 |
| D | 0.081414 |
| E | -4.395208 |
| F | -107.1995 |
| G | 111.3329 |
| H | -62.67590 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1983 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 298. | 53.37 | 26.74 | 27.22 | -0.14 |
| 300. | 54.08 | 27.10 | 27.22 | -0.03 |
| 400. | 77.73 | 46.34 | 29.57 | 6.71 |
| 500. | 89.91 | 65.12 | 34.83 | 15.15 |
| 600. | 97.56 | 82.23 | 41.32 | 24.54 |
| 700. | 103.1 | 97.70 | 48.29 | 34.59 |
| 800. | 107.4 | 111.8 | 55.36 | 45.12 |
| 900. | 111.1 | 124.6 | 62.35 | 56.05 |
| 1000. | 114.4 | 136.5 | 69.18 | 67.34 |
| 1100. | 117.5 | 147.6 | 75.81 | 78.93 |
| 1200. | 120.3 | 157.9 | 82.23 | 90.82 |
| 1300. | 123.0 | 167.6 | 88.43 | 103.0 |
| 1400. | 125.6 | 176.9 | 94.42 | 115.4 |
| 1500. | 128.1 | 185.6 | 100.2 | 128.1 |
| 1600. | 130.6 | 194.0 | 105.8 | 141.0 |
| 1700. | 133.1 | 202.0 | 111.2 | 154.2 |
| 1800. | 135.5 | 209.6 | 116.5 | 167.7 |
| 1900. | 137.9 | 217.0 | 121.6 | 181.3 |
| 2000. | 140.2 | 224.2 | 126.5 | 195.2 |
| 2100. | 142.6 | 231.1 | 131.3 | 209.4 |
| 2200. | 144.9 | 237.7 | 136.0 | 223.8 |
| 2300. | 147.3 | 244.2 | 140.6 | 238.4 |
| 2400. | 149.6 | 250.5 | 145.0 | 253.2 |
| 2500. | 151.9 | 256.7 | 149.4 | 268.3 |
| 2600. | 154.2 | 262.7 | 153.6 | 283.6 |
| 2700. | 156.6 | 268.6 | 157.8 | 299.1 |
References
Go To: Top, Solid Phase Heat Capacity (Shomate Equation), 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]
Notes
Go To: Top, Solid Phase Heat Capacity (Shomate Equation), References
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