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 (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. - 1500. |
|---|---|
| A | 67.70925 |
| B | 576.4548 |
| C | -219.7520 |
| D | 18.93072 |
| E | -0.774806 |
| F | -3056.437 |
| G | 144.1321 |
| H | -3009.940 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1965 |
| 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. | 211.8 | 228.7 | 228.8 | -0.03 |
| 300. | 212.8 | 230.1 | 228.8 | 0.40 |
| 400. | 259.5 | 297.9 | 237.7 | 24.07 |
| 500. | 300.3 | 360.3 | 256.1 | 52.10 |
| 600. | 336.4 | 418.3 | 278.3 | 83.97 |
| 700. | 368.5 | 472.6 | 302.3 | 119.2 |
| 800. | 396.7 | 523.7 | 326.8 | 157.5 |
| 900. | 421.4 | 571.9 | 351.4 | 198.5 |
| 1000. | 442.6 | 617.4 | 375.7 | 241.7 |
| 1100. | 460.5 | 660.5 | 399.7 | 286.9 |
| 1200. | 475.2 | 701.2 | 423.1 | 333.7 |
| 1300. | 486.9 | 739.7 | 446.0 | 381.8 |
| 1400. | 495.6 | 776.1 | 468.3 | 431.0 |
| 1500. | 501.5 | 810.5 | 490.0 | 480.8 |
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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