potassium metaborate
- Formula: BKO2
- Molecular weight: 81.908
- CAS Registry Number: 13709-94-9
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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. - 1220. |
|---|---|
| A | 41.74954 |
| B | 119.6164 |
| C | -71.80664 |
| D | 15.10098 |
| E | -0.390727 |
| F | -1013.432 |
| G | 95.68557 |
| H | -994.9552 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1971 |
| 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. | 67.02 | 79.93 | 79.99 | -0.02 |
| 300. | 67.24 | 80.38 | 79.99 | 0.12 |
| 400. | 76.63 | 101.1 | 82.74 | 7.33 |
| 500. | 83.93 | 119.0 | 88.24 | 15.38 |
| 600. | 89.85 | 134.8 | 94.71 | 24.07 |
| 700. | 94.68 | 149.1 | 101.5 | 33.31 |
| 800. | 98.61 | 162.0 | 108.2 | 42.98 |
| 900. | 101.8 | 173.8 | 114.9 | 53.00 |
| 1000. | 104.3 | 184.6 | 121.3 | 63.31 |
| 1100. | 106.2 | 194.7 | 127.5 | 73.84 |
| 1200. | 107.7 | 204.0 | 133.5 | 84.54 |
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
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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