iron difluoride
- Formula: F2Fe
- Molecular weight: 93.842
- CAS Registry Number: 7789-28-8
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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. - 1373. |
|---|---|
| A | 61.53451 |
| B | 39.87026 |
| C | -23.89562 |
| D | 4.905782 |
| E | -0.297405 |
| F | -726.7650 |
| G | 148.8768 |
| H | -705.8408 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in September, 1965 |
| 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. | 68.07 | 86.92 | 86.98 | -0.02 |
| 300. | 68.17 | 87.37 | 86.98 | 0.12 |
| 400. | 72.11 | 107.6 | 89.70 | 7.14 |
| 500. | 74.92 | 124.0 | 94.97 | 14.50 |
| 600. | 77.09 | 137.8 | 101.0 | 22.11 |
| 700. | 78.81 | 149.8 | 107.1 | 29.91 |
| 800. | 80.18 | 160.5 | 113.1 | 37.86 |
| 900. | 81.27 | 170.0 | 118.9 | 45.93 |
| 1000. | 82.12 | 178.6 | 124.5 | 54.10 |
| 1100. | 82.76 | 186.4 | 129.8 | 62.35 |
| 1200. | 83.24 | 193.7 | 134.8 | 70.65 |
| 1300. | 83.58 | 200.3 | 139.6 | 78.99 |
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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