tungsten trioxide
- Formula: O3W
- Molecular weight: 231.84
- IUPAC Standard InChI: InChI=1S/3O.W/q3*-2;+6
- IUPAC Standard InChIKey: UARSRGYYQSHHDK-UHFFFAOYSA-N
- CAS Registry Number: 1314-35-8
- Chemical structure:
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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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 1745. - 3000. |
|---|---|
| A | 131.7960 |
| B | 0.000000 |
| C | 0.000000 |
| D | 0.000000 |
| E | 0.000000 |
| F | -855.9292 |
| G | 211.8573 |
| H | -788.9141 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in September, 1966 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 1745. | 131.8 | 285.2 | 191.8 | 163.0 |
| 1800. | 131.8 | 289.3 | 194.8 | 170.2 |
| 1900. | 131.8 | 296.5 | 199.9 | 183.4 |
| 2000. | 131.8 | 303.2 | 204.9 | 196.6 |
| 2100. | 131.8 | 309.6 | 209.8 | 209.8 |
| 2200. | 131.8 | 315.8 | 214.4 | 222.9 |
| 2300. | 131.8 | 321.6 | 219.0 | 236.1 |
| 2400. | 131.8 | 327.2 | 223.4 | 249.3 |
| 2500. | 131.8 | 332.6 | 227.6 | 262.5 |
| 2600. | 131.8 | 337.8 | 231.8 | 275.7 |
| 2700. | 131.8 | 342.8 | 235.8 | 288.8 |
| 2800. | 131.8 | 347.6 | 239.7 | 302.0 |
| 2900. | 131.8 | 352.2 | 243.5 | 315.2 |
| 3000. | 131.8 | 356.7 | 247.2 | 328.4 |
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
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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