potassium sulfate
- Formula: K2O4S
- Molecular weight: 174.259
- CAS Registry Number: 7778-80-5
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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) | 1342. - 3000. |
|---|---|
| A | 48.15019 |
| B | 0.000000 |
| C | 0.000000 |
| D | 0.000000 |
| E | 0.000000 |
| F | -351.6429 |
| G | 99.30729 |
| H | -333.0949 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 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) |
|---|---|---|---|---|
| 1342. | 48.15 | 113.5 | 79.14 | 46.07 |
| 1400. | 48.15 | 115.5 | 80.61 | 48.86 |
| 1500. | 48.15 | 118.8 | 83.05 | 53.68 |
| 1600. | 48.15 | 121.9 | 85.38 | 58.49 |
| 1700. | 48.15 | 124.9 | 87.62 | 63.31 |
| 1800. | 48.15 | 127.6 | 89.76 | 68.12 |
| 1900. | 48.15 | 130.2 | 91.82 | 72.94 |
| 2000. | 48.15 | 132.7 | 93.81 | 77.75 |
| 2100. | 48.15 | 135.0 | 95.71 | 82.57 |
| 2200. | 48.15 | 137.3 | 97.55 | 87.38 |
| 2300. | 48.15 | 139.4 | 99.33 | 92.20 |
| 2400. | 48.15 | 141.5 | 101.0 | 97.01 |
| 2500. | 48.15 | 143.4 | 102.7 | 101.8 |
| 2600. | 48.15 | 145.3 | 104.3 | 106.6 |
| 2700. | 48.15 | 147.1 | 105.9 | 111.5 |
| 2800. | 48.15 | 148.9 | 107.4 | 116.3 |
| 2900. | 48.15 | 150.6 | 108.8 | 121.1 |
| 3000. | 48.15 | 152.2 | 110.2 | 125.9 |
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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