Potassium fluoride
- Formula: FK
- Molecular weight: 58.0967
- IUPAC Standard InChI: InChI=1S/FH.K/h1H;/q;+1/p-1
- IUPAC Standard InChIKey: NROKBHXJSPEDAR-UHFFFAOYSA-M
- CAS Registry Number: 7789-23-3
- 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. - 900. | 900. - 1131. |
|---|---|---|
| A | 46.53612 | -254.3834 |
| B | 13.96661 | 474.8003 |
| C | -2.385212 | -246.4832 |
| D | 2.844677 | 43.88472 |
| E | -0.140770 | 43.50900 |
| F | -583.5592 | -398.2930 |
| G | 117.9905 | -212.6434 |
| H | -568.6056 | -568.6056 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1969 | Data last reviewed in June, 1969 |
| 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. | 48.98 | 66.52 | 66.55 | -0.01 |
| 300. | 49.02 | 66.85 | 66.56 | 0.09 |
| 400. | 51.04 | 81.25 | 68.50 | 5.10 |
| 500. | 52.72 | 92.82 | 72.25 | 10.29 |
| 600. | 54.28 | 102.6 | 76.51 | 15.64 |
| 700. | 55.83 | 111.1 | 80.85 | 21.14 |
| 800. | 57.42 | 118.6 | 85.11 | 26.80 |
| 900. | 59.07 | 125.5 | 89.22 | 32.63 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 900. | 58.99 | 125.5 | 89.21 | 32.62 |
| 1000. | 61.33 | 131.8 | 93.16 | 38.63 |
| 1100. | 64.02 | 137.8 | 96.94 | 44.90 |
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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