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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 1745. - 3000. |
|---|---|
| A | 31.50000 |
| B | 0.000000 |
| C | 0.000000 |
| D | 0.000000 |
| E | 0.000000 |
| F | -204.5720 |
| G | 50.63511 |
| H | -188.5550 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in September, 1966 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 1745. | 31.50 | 68.17 | 45.85 | 38.95 |
| 1800. | 31.50 | 69.15 | 46.55 | 40.68 |
| 1900. | 31.50 | 70.85 | 47.78 | 43.83 |
| 2000. | 31.50 | 72.47 | 48.98 | 46.98 |
| 2100. | 31.50 | 74.01 | 50.13 | 50.13 |
| 2200. | 31.50 | 75.47 | 51.25 | 53.28 |
| 2300. | 31.50 | 76.87 | 52.34 | 56.43 |
| 2400. | 31.50 | 78.21 | 53.39 | 59.58 |
| 2500. | 31.50 | 79.50 | 54.41 | 62.73 |
| 2600. | 31.50 | 80.73 | 55.39 | 65.88 |
| 2700. | 31.50 | 81.92 | 56.35 | 69.03 |
| 2800. | 31.50 | 83.07 | 57.29 | 72.18 |
| 2900. | 31.50 | 84.17 | 58.20 | 75.33 |
| 3000. | 31.50 | 85.24 | 59.08 | 78.48 |
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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