Nickel sulfide
- Formula: NiS2
- Molecular weight: 122.823
- CAS Registry Number: 12035-51-7
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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. to 1280. |
|---|---|
| A | 64.43360 |
| B | 20.76331 |
| C | -0.009134 |
| D | 0.002569 |
| E | 0.000227 |
| F | -151.5110 |
| G | 143.7509 |
| H | -131.3780 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in March, 1977 |
| 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. | 70.62 | 71.93 | 71.97 | -0.01 |
| 300. | 70.66 | 72.40 | 71.97 | 0.13 |
| 400. | 72.74 | 93.01 | 74.76 | 7.30 |
| 500. | 74.81 | 109.5 | 80.11 | 14.68 |
| 600. | 76.89 | 123.3 | 86.19 | 22.26 |
| 700. | 78.96 | 135.3 | 92.36 | 30.06 |
| 800. | 81.04 | 146.0 | 98.41 | 38.06 |
| 900. | 83.12 | 155.6 | 104.2 | 46.26 |
| 1000. | 85.19 | 164.5 | 109.8 | 54.68 |
| 1100. | 87.27 | 172.7 | 115.2 | 63.30 |
| 1200. | 89.34 | 180.4 | 120.3 | 72.13 |
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
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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