potassium hydride
- Formula: HK
- Molecular weight: 40.1062
- IUPAC Standard InChI: InChI=1S/K.H
- IUPAC Standard InChIKey: NTTOTNSKUYCDAV-UHFFFAOYSA-N
- CAS Registry Number: 7693-26-7
- Chemical structure:
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Condensed 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°solid | -57.82 | kJ/mol | Review | Chase, 1998 | Data last reviewed in March, 1963 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 50.18 | J/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1963 |
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 (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. to 1500. |
|---|---|
| A | 28.28279 |
| B | 60.56758 |
| C | -36.41034 |
| D | 7.935751 |
| E | -0.480344 |
| F | -70.26024 |
| G | 65.19509 |
| H | -57.81995 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in March, 1963 |
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°solid Entropy of solid 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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