dipotassium sulphide
- Formula: K2S
- Molecular weight: 110.262
- CAS Registry Number: 1312-73-8
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Liquid 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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 1221. - 3000. |
|---|---|
| A | 24.13009 |
| B | 1.444321×10-8 |
| C | -6.279589×10-9 |
| D | 9.158609×10-10 |
| E | 2.475729×10-9 |
| F | -92.44369 |
| G | 57.95440 |
| H | -82.81699 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in March, 1978 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 1221. | 24.13 | 62.77 | 46.53 | 19.84 |
| 1300. | 24.13 | 64.29 | 47.56 | 21.74 |
| 1400. | 24.13 | 66.07 | 48.82 | 24.16 |
| 1500. | 24.13 | 67.74 | 50.03 | 26.57 |
| 1600. | 24.13 | 69.30 | 51.18 | 28.98 |
| 1700. | 24.13 | 70.76 | 52.29 | 31.39 |
| 1800. | 24.13 | 72.14 | 53.36 | 33.81 |
| 1900. | 24.13 | 73.44 | 54.38 | 36.22 |
| 2000. | 24.13 | 74.68 | 55.36 | 38.63 |
| 2100. | 24.13 | 75.86 | 56.31 | 41.05 |
| 2200. | 24.13 | 76.98 | 57.23 | 43.46 |
| 2300. | 24.13 | 78.05 | 58.11 | 45.87 |
| 2400. | 24.13 | 79.08 | 58.96 | 48.29 |
| 2500. | 24.13 | 80.06 | 59.79 | 50.70 |
| 2600. | 24.13 | 81.01 | 60.58 | 53.11 |
| 2700. | 24.13 | 81.92 | 61.36 | 55.52 |
| 2800. | 24.13 | 82.80 | 62.11 | 57.94 |
| 2900. | 24.13 | 83.65 | 62.84 | 60.35 |
| 3000. | 24.13 | 84.46 | 63.54 | 62.76 |
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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