Aluminum hydroxide
- Formula: AlHO
- Molecular weight: 43.9889
- CAS Registry Number: 20768-67-6
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Gas phase thermochemistry data
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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°gas | -43.000 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1967 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 51.728 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1967 |
Gas 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 1000. | 1000. to 3000. | 3000. to 6000. |
|---|---|---|---|
| A | 0.713956 | 10.26867 | 14.42667 |
| B | 25.59441 | 3.327892 | 0.168581 |
| C | -21.40478 | -0.942048 | -0.023114 |
| D | 6.938863 | 0.097526 | 0.001150 |
| E | 0.089036 | -0.846788 | -3.994384 |
| F | -43.87643 | -48.34250 | -53.96750 |
| G | 46.35182 | 60.20124 | 61.66826 |
| H | -43.00000 | -43.00000 | -43.00000 |
| Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1967 | Data last reviewed in December, 1967 | Data last reviewed in December, 1967 |
References
Go To: Top, Gas 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, Gas phase thermochemistry data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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