dipotassium peroxide
- Formula: K2O2
- Molecular weight: 110.1954
- CAS Registry Number: 17014-71-0
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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 2000. |
|---|---|
| A | 79.12488 |
| B | 76.60193 |
| C | -11.12103 |
| D | 2.370906 |
| E | -0.079668 |
| F | -522.9833 |
| G | 185.8709 |
| H | -495.8040 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in September, 1963 |
| 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. | 100.1 | 112.9 | 113.0 | -0.02 |
| 300. | 100.3 | 113.6 | 113.0 | 0.18 |
| 400. | 107.6 | 143.4 | 117.0 | 10.58 |
| 500. | 114.6 | 168.2 | 124.8 | 21.69 |
| 600. | 121.4 | 189.7 | 133.9 | 33.49 |
| 700. | 127.9 | 208.9 | 143.2 | 45.96 |
| 800. | 134.4 | 226.4 | 152.6 | 59.08 |
| 900. | 140.7 | 242.6 | 161.7 | 72.83 |
| 1000. | 146.9 | 257.7 | 170.5 | 87.21 |
| 1100. | 153.0 | 272.0 | 179.1 | 102.2 |
| 1200. | 159.1 | 285.6 | 187.4 | 117.8 |
| 1300. | 165.1 | 298.6 | 195.5 | 134.0 |
| 1400. | 171.0 | 311.0 | 203.3 | 150.8 |
| 1500. | 177.0 | 323.0 | 210.9 | 168.2 |
| 1600. | 182.9 | 334.6 | 218.3 | 186.2 |
| 1700. | 188.8 | 345.9 | 225.4 | 204.8 |
| 1800. | 194.8 | 356.9 | 232.4 | 224.0 |
| 1900. | 200.8 | 367.6 | 239.3 | 243.8 |
| 2000. | 206.8 | 378.0 | 245.9 | 264.1 |
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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