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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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. - 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 |
| 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. | 37.90 | 50.16 | 50.22 | -0.02 |
| 300. | 38.05 | 50.42 | 50.22 | 0.06 |
| 400. | 44.19 | 62.26 | 51.78 | 4.19 |
| 500. | 48.53 | 72.61 | 54.94 | 8.84 |
| 600. | 51.90 | 81.77 | 58.66 | 13.87 |
| 700. | 54.58 | 89.98 | 62.56 | 19.20 |
| 800. | 56.75 | 97.42 | 66.46 | 24.77 |
| 900. | 58.49 | 104.2 | 70.28 | 30.53 |
| 1000. | 59.90 | 110.4 | 73.99 | 36.45 |
| 1100. | 61.02 | 116.2 | 77.57 | 42.50 |
| 1200. | 61.91 | 121.6 | 81.01 | 48.65 |
| 1300. | 62.64 | 126.5 | 84.33 | 54.88 |
| 1400. | 63.24 | 131.2 | 87.51 | 61.17 |
| 1500. | 63.78 | 135.6 | 90.57 | 67.52 |
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
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