Tetraphosphorus decaoxide
- Formula: O10P4
- Molecular weight: 283.8890
- CAS Registry Number: 16752-60-6
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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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. - 1500. |
|---|---|
| A | 16.18290 |
| B | 137.7760 |
| C | -52.52199 |
| D | 4.524551 |
| E | -0.185183 |
| F | -730.5060 |
| G | 34.44840 |
| H | -719.3929 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1965 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 298. | 50.61 | 54.66 | 54.68 | -0.01 |
| 300. | 50.85 | 55.00 | 54.69 | 0.1 |
| 400. | 62.02 | 71.20 | 56.82 | 5.75 |
| 500. | 71.77 | 86.11 | 61.21 | 12.45 |
| 600. | 80.40 | 99.98 | 66.53 | 20.07 |
| 700. | 88.06 | 113.0 | 72.24 | 28.50 |
| 800. | 94.82 | 125.2 | 78.10 | 37.65 |
| 900. | 100.7 | 136.7 | 83.98 | 47.44 |
| 1000. | 105.8 | 147.6 | 89.80 | 57.77 |
| 1100. | 110.1 | 157.9 | 95.52 | 68.56 |
| 1200. | 113.6 | 167.6 | 101.1 | 79.75 |
| 1300. | 116.4 | 176.8 | 106.6 | 91.25 |
| 1400. | 118.4 | 185.5 | 111.9 | 103.0 |
| 1500. | 119.9 | 193.7 | 117.1 | 114.9 |
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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