sodium metaborate, anhydrous
- Formula: BNaO2
- Molecular weight: 65.800
- CAS Registry Number: 7775-19-1
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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. - 1240. |
|---|---|
| A | 40.06636 |
| B | 120.4511 |
| C | -72.39575 |
| D | 15.24101 |
| E | -0.356053 |
| F | -993.5954 |
| G | 87.17615 |
| H | -975.7088 |
| 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. | 65.93 | 73.49 | 73.53 | -0.01 |
| 300. | 66.14 | 73.93 | 73.53 | 0.12 |
| 400. | 75.41 | 94.29 | 76.24 | 7.22 |
| 500. | 82.67 | 111.9 | 81.65 | 15.14 |
| 600. | 88.58 | 127.5 | 88.03 | 23.71 |
| 700. | 93.41 | 141.6 | 94.69 | 32.82 |
| 800. | 97.34 | 154.3 | 101.4 | 42.36 |
| 900. | 100.5 | 166.0 | 107.9 | 52.26 |
| 1000. | 103.0 | 176.7 | 114.2 | 62.44 |
| 1100. | 105.0 | 186.6 | 120.4 | 72.84 |
| 1200. | 106.4 | 195.8 | 126.3 | 83.42 |
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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