calcium sulphide
- Formula: CaS
- Molecular weight: 72.143
- IUPAC Standard InChI: InChI=1S/Ca.S
- IUPAC Standard InChIKey: JGIATAMCQXIDNZ-UHFFFAOYSA-N
- CAS Registry Number: 20548-54-3
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Calcium sulfide
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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 3000. |
|---|---|
| A | 48.60260 |
| B | 7.280161 |
| C | -1.933724 |
| D | 0.329739 |
| E | -0.289224 |
| F | -488.9966 |
| G | 111.6450 |
| H | -473.2104 |
| Reference | Chase, 1998 |
| Comment | 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. | 47.35 | 56.52 | 56.60 | -0.03 |
| 300. | 47.41 | 56.84 | 56.60 | 0.07 |
| 400. | 49.42 | 70.78 | 58.48 | 4.92 |
| 500. | 50.64 | 81.95 | 62.09 | 9.93 |
| 600. | 51.54 | 91.26 | 66.20 | 15.04 |
| 700. | 52.27 | 99.26 | 70.36 | 20.23 |
| 800. | 52.91 | 106.3 | 74.42 | 25.49 |
| 900. | 53.47 | 112.6 | 78.32 | 30.81 |
| 1000. | 53.99 | 118.2 | 82.03 | 36.18 |
| 1100. | 54.47 | 123.4 | 85.56 | 41.61 |
| 1200. | 54.92 | 128.1 | 88.91 | 47.08 |
| 1300. | 55.35 | 132.6 | 92.10 | 52.59 |
| 1400. | 55.76 | 136.7 | 95.14 | 58.15 |
| 1500. | 56.16 | 140.5 | 98.04 | 63.74 |
| 1600. | 56.54 | 144.2 | 100.8 | 69.38 |
| 1700. | 56.91 | 147.6 | 103.5 | 75.05 |
| 1800. | 57.28 | 150.9 | 106.0 | 80.76 |
| 1900. | 57.64 | 154.0 | 108.4 | 86.50 |
| 2000. | 57.99 | 156.9 | 110.8 | 92.29 |
| 2100. | 58.35 | 159.8 | 113.1 | 98.10 |
| 2200. | 58.71 | 162.5 | 115.3 | 104.0 |
| 2300. | 59.07 | 165.1 | 117.4 | 109.8 |
| 2400. | 59.44 | 167.6 | 119.4 | 115.8 |
| 2500. | 59.82 | 170.1 | 121.4 | 121.7 |
| 2600. | 60.21 | 172.4 | 123.3 | 127.7 |
| 2700. | 60.61 | 174.7 | 125.2 | 133.8 |
| 2800. | 61.03 | 176.9 | 127.0 | 139.9 |
| 2900. | 61.46 | 179.1 | 128.7 | 146.0 |
| 3000. | 61.91 | 181.2 | 130.4 | 152.2 |
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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