sodium metaborate, anhydrous
- Formula: BNaO2
- Molecular weight: 65.800
- CAS Registry Number: 7775-19-1
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Condensed phase thermochemistry data
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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -229.45 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1971 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 19.83 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1971 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -233.20 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1971 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 17.57 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1971 |
Liquid Phase Heat Capacity (Shomate Equation)
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 |
Solid Phase Heat Capacity (Shomate Equation)
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) | 298. to 1240. |
|---|---|
| A | 9.576090 |
| B | 28.78850 |
| C | -17.30300 |
| D | 3.642689 |
| E | -0.085099 |
| F | -237.4750 |
| G | 20.83560 |
| H | -233.2000 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1971 |
References
Go To: Top, Condensed phase thermochemistry data, 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, Condensed phase thermochemistry data, References
- Symbols used in this document:
S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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