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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Gas 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) | 3000. to 6000. |
|---|---|
| A | 19.77170 |
| B | 0.056186 |
| C | -0.011404 |
| D | 0.000792 |
| E | -0.834754 |
| F | -78.26379 |
| G | 88.79711 |
| H | -70.00010 |
| 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) |
|---|---|---|---|---|
| 3000. | 19.77 | 110.7 | 93.52 | 51.50 |
| 3100. | 19.77 | 111.3 | 94.09 | 53.47 |
| 3200. | 19.78 | 112.0 | 94.64 | 55.45 |
| 3300. | 19.78 | 112.6 | 95.17 | 57.43 |
| 3400. | 19.79 | 113.2 | 95.69 | 59.41 |
| 3500. | 19.79 | 113.7 | 96.20 | 61.39 |
| 3600. | 19.80 | 114.3 | 96.69 | 63.37 |
| 3700. | 19.80 | 114.8 | 97.18 | 65.35 |
| 3800. | 19.81 | 115.4 | 97.65 | 67.33 |
| 3900. | 19.81 | 115.9 | 98.11 | 69.31 |
| 4000. | 19.81 | 116.4 | 98.56 | 71.29 |
| 4100. | 19.82 | 116.9 | 99.00 | 73.27 |
| 4200. | 19.82 | 117.3 | 99.43 | 75.25 |
| 4300. | 19.82 | 117.8 | 99.85 | 77.23 |
| 4400. | 19.82 | 118.3 | 100.3 | 79.22 |
| 4500. | 19.82 | 118.7 | 100.7 | 81.20 |
| 4600. | 19.83 | 119.2 | 101.1 | 83.18 |
| 4700. | 19.83 | 119.6 | 101.5 | 85.16 |
| 4800. | 19.83 | 120.0 | 101.8 | 87.15 |
| 4900. | 19.83 | 120.4 | 102.2 | 89.13 |
| 5000. | 19.83 | 120.8 | 102.6 | 91.11 |
| 5100. | 19.83 | 121.2 | 102.9 | 93.10 |
| 5200. | 19.84 | 121.6 | 103.3 | 95.08 |
| 5300. | 19.84 | 122.0 | 103.6 | 97.06 |
| 5400. | 19.84 | 122.3 | 104.0 | 99.05 |
| 5500. | 19.84 | 122.7 | 104.3 | 101.0 |
| 5600. | 19.84 | 123.1 | 104.7 | 103.0 |
| 5700. | 19.84 | 123.4 | 105.0 | 105.0 |
| 5800. | 19.84 | 123.8 | 105.3 | 107.0 |
| 5900. | 19.84 | 124.1 | 105.6 | 109.0 |
| 6000. | 19.85 | 124.4 | 105.9 | 111.0 |
References
Go To: Top, Gas 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, Gas Phase Heat Capacity (Shomate Equation), References
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