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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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. - 1050. | 1050. - 1745. |
|---|---|---|
| A | 30.53960 | 68.31250 |
| B | 200.8670 | 35.12680 |
| C | -206.2480 | -10.35390 |
| D | 76.51930 | 2.016841 |
| E | -0.088904 | 2.245240 |
| F | -859.5700 | -857.1110 |
| G | 60.96830 | 156.3860 |
| H | -842.9090 | -842.9090 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in September, 1966 | 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) |
|---|---|---|---|---|
| 298. | 73.11 | 75.87 | 75.91 | -0.01 |
| 300. | 73.32 | 76.36 | 75.91 | 0.13 |
| 400. | 82.23 | 98.74 | 78.90 | 7.94 |
| 500. | 88.62 | 117.8 | 84.82 | 16.50 |
| 600. | 93.09 | 134.4 | 91.74 | 25.60 |
| 700. | 96.15 | 149.0 | 98.89 | 35.07 |
| 800. | 98.27 | 162.0 | 106.0 | 44.80 |
| 900. | 99.93 | 173.6 | 112.9 | 54.71 |
| 1000. | 101.6 | 184.3 | 119.5 | 64.78 |
| Temperature (K) |
Cp (J/mol*K) |
S° (J/mol*K) |
-(G° - H°298.15)/T (J/mol*K) |
H° - H°298.15 (kJ/mol) |
|---|---|---|---|---|
| 1050. | 98.15 | 190.7 | 122.7 | 71.37 |
| 1100. | 98.96 | 195.2 | 125.9 | 76.30 |
| 1200. | 100.6 | 203.9 | 132.0 | 86.27 |
| 1300. | 102.2 | 212.0 | 137.9 | 96.42 |
| 1400. | 103.9 | 219.7 | 143.4 | 106.7 |
| 1500. | 105.5 | 226.9 | 148.8 | 117.2 |
| 1600. | 107.1 | 233.8 | 153.9 | 127.8 |
| 1700. | 108.8 | 240.3 | 158.8 | 138.6 |
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
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