sodium metaborate, anhydrous
- Formula: BNaO2
- Molecular weight: 65.800
- CAS Registry Number: 7775-19-1
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Liquid Phase Heat Capacity (Shomate Equation)
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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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 1240. to 2500. |
|---|---|
| A | 35.00000 |
| B | -5.833330×10-8 |
| C | 2.846210×10-8 |
| D | -4.722101×10-9 |
| E | -7.848880×10-9 |
| F | -247.6329 |
| G | 46.56401 |
| H | -229.4500 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1971 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 1240. | 35.00 | 54.09 | 33.76 | 25.22 |
| 1300. | 35.00 | 55.75 | 34.73 | 27.32 |
| 1400. | 35.00 | 58.34 | 36.33 | 30.82 |
| 1500. | 35.00 | 60.76 | 37.88 | 34.32 |
| 1600. | 35.00 | 63.01 | 39.38 | 37.82 |
| 1700. | 35.00 | 65.14 | 40.83 | 41.32 |
| 1800. | 35.00 | 67.14 | 42.24 | 44.82 |
| 1900. | 35.00 | 69.03 | 43.60 | 48.32 |
| 2000. | 35.00 | 70.82 | 44.92 | 51.82 |
| 2100. | 35.00 | 72.53 | 46.19 | 55.32 |
| 2200. | 35.00 | 74.16 | 47.42 | 58.82 |
| 2300. | 35.00 | 75.72 | 48.62 | 62.32 |
| 2400. | 35.00 | 77.21 | 49.78 | 65.82 |
| 2500. | 35.00 | 78.63 | 50.91 | 69.32 |
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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