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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Liquid 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) | 2743. - 4500. |
|---|---|
| A | 290.0855 |
| B | -102.4653 |
| C | 24.80643 |
| D | -2.078533 |
| E | -126.5811 |
| F | -249.7107 |
| G | 210.1184 |
| H | 51.88495 |
| 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) |
|---|---|---|---|---|
| 2743. | 135.9 | 309.2 | 201.3 | 296.0 |
| 2800. | 135.9 | 312.0 | 203.5 | 303.8 |
| 2900. | 135.8 | 316.8 | 207.3 | 317.3 |
| 3000. | 135.8 | 321.4 | 211.1 | 330.9 |
| 3100. | 135.7 | 325.8 | 214.7 | 344.5 |
| 3200. | 135.7 | 330.1 | 218.2 | 358.1 |
| 3300. | 135.8 | 334.3 | 221.7 | 371.7 |
| 3400. | 135.8 | 338.4 | 225.1 | 385.2 |
| 3500. | 135.9 | 342.3 | 228.4 | 398.8 |
| 3600. | 136.0 | 346.1 | 231.6 | 412.4 |
| 3700. | 136.0 | 349.9 | 234.7 | 426.0 |
| 3800. | 136.1 | 353.5 | 237.8 | 439.6 |
| 3900. | 136.2 | 357.0 | 240.8 | 453.2 |
| 4000. | 136.2 | 360.5 | 243.8 | 466.8 |
| 4100. | 136.2 | 363.8 | 246.6 | 480.5 |
| 4200. | 136.1 | 367.1 | 249.5 | 494.1 |
| 4300. | 136.1 | 370.3 | 252.2 | 507.7 |
| 4400. | 135.9 | 373.4 | 255.0 | 521.3 |
| 4500. | 135.7 | 376.5 | 257.6 | 534.9 |
References
Go To: Top, Liquid 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, Liquid Phase Heat Capacity (Shomate Equation), References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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