potassium hydrogendifluoride
- Formula: F2HK
- Molecular weight: 78.1030
- CAS Registry Number: 7789-29-9
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Liquid Phase Heat Capacity (Shomate Equation)
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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) | 511.95 to 2000. |
|---|---|
| A | 104.6000 |
| B | 1.197391×10-12 |
| C | 0.000000 |
| D | 0.000000 |
| E | 3.270202×10-13 |
| F | -948.1864 |
| G | 257.9495 |
| H | -916.5721 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1971 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 512. | 104.6 | 187.9 | 145.1 | 21.94 |
| 600. | 104.6 | 204.5 | 152.6 | 31.15 |
| 700. | 104.6 | 220.6 | 161.2 | 41.61 |
| 800. | 104.6 | 234.6 | 169.5 | 52.07 |
| 900. | 104.6 | 246.9 | 177.5 | 62.53 |
| 1000. | 104.6 | 257.9 | 185.0 | 72.99 |
| 1100. | 104.6 | 267.9 | 192.1 | 83.45 |
| 1200. | 104.6 | 277.0 | 198.8 | 93.91 |
| 1300. | 104.6 | 285.4 | 205.1 | 104.4 |
| 1400. | 104.6 | 293.1 | 211.1 | 114.8 |
| 1500. | 104.6 | 300.4 | 216.8 | 125.3 |
| 1600. | 104.6 | 307.1 | 222.3 | 135.7 |
| 1700. | 104.6 | 313.5 | 227.4 | 146.2 |
| 1800. | 104.6 | 319.4 | 232.4 | 156.7 |
| 1900. | 104.6 | 325.1 | 237.1 | 167.1 |
| 2000. | 104.6 | 330.5 | 241.7 | 177.6 |
References
Go To: Top, Liquid 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, Liquid Phase Heat Capacity (Shomate Equation), References
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