Iron sulfide
- Formula: FeS
- Molecular weight: 87.910
- IUPAC Standard InChI: InChI=1S/Fe.S
- IUPAC Standard InChIKey: MBMLMWLHJBBADN-UHFFFAOYSA-N
- CAS Registry Number: 1317-96-0
- 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. - 411. | 411. - 598. | 598. - 1463. |
|---|---|---|---|
| A | 9240.570 | 72.36830 | 95.82780 |
| B | -55016.80 | -0.060653 | -85.56150 |
| C | 121502.0 | 0.120490 | 48.72030 |
| D | -93187.10 | -0.079265 | -0.000101 |
| E | -99.35930 | -0.000018 | 0.000071 |
| F | -1634.010 | -122.1360 | -123.9460 |
| G | 22510.20 | 149.9740 | 205.1350 |
| H | -101.6710 | -101.6710 | -101.6710 |
| Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 |
| Comment | troilite phase; Data last reviewed in September, 1977 | troilite phase; Data last reviewed in September, 1977 | troilite phase; Data last reviewed in September, 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. | 50.50 | 60.33 | 60.37 | -0.01 |
| 300. | 50.67 | 60.67 | 60.37 | 0.09 |
| 400. | 89.20 | 79.10 | 62.63 | 6.59 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 411. | 72.36 | 85.61 | 63.04 | 9.28 |
| 500. | 72.36 | 99.79 | 68.36 | 15.72 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 598. | 62.08 | 113.4 | 74.61 | 23.20 |
| 600. | 62.03 | 113.6 | 74.74 | 23.33 |
| 700. | 59.81 | 123.0 | 80.98 | 29.41 |
| 800. | 58.56 | 130.9 | 86.74 | 35.32 |
| 900. | 58.29 | 137.8 | 92.04 | 41.16 |
| 1000. | 58.99 | 143.9 | 96.92 | 47.01 |
| 1100. | 60.66 | 149.6 | 101.5 | 52.99 |
| 1200. | 63.31 | 155.0 | 105.7 | 59.18 |
| 1300. | 66.93 | 160.2 | 109.7 | 65.68 |
| 1400. | 71.53 | 165.3 | 113.5 | 72.60 |
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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