phosphorus
- Formula: P
- Molecular weight: 30.973762
- IUPAC Standard InChI: InChI=1S/P
- IUPAC Standard InChIKey: OAICVXFJPJFONN-UHFFFAOYSA-N
- CAS Registry Number: 7723-14-0
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: red phosphorus; Phosphorus atom
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Condensed phase thermochemistry data
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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | 0.62 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1961 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 43.01 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1961 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -17.46 | kJ/mol | Review | Chase, 1998 | red, v phase; Data last reviewed in June, 1961 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 41.09 ± 0.25 | J/mol*K | Review | Cox, Wagman, et al., 1984 | white phase; CODATA Review value |
Liquid Phase Heat Capacity (Shomate Equation)
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) | 317.3 to 1180.008 |
|---|---|
| A | 26.32602 |
| B | 1.041373×10-10 |
| C | -6.121360×10-11 |
| D | 1.094033×10-11 |
| E | 2.995196×10-12 |
| F | -7.234262 |
| G | 74.86891 |
| H | 0.615002 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1961 |
Solid Phase Heat Capacity (Shomate Equation)
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. to 317.3 | 298. to 317.3 | 298. to 317.3 | 298. to 317.3 |
|---|---|---|---|---|
| A | 24.32214 | 16.45576 | 28.04226 | 28.38677 |
| B | -1.809807 | 43.28892 | -18.96093 | -19.14360 |
| C | 7.486431 | -58.73876 | 36.61209 | 36.82476 |
| D | 3.147950 | 25.60646 | -13.81611 | -13.89983 |
| E | -0.296815 | -0.086728 | -0.357001 | -0.358810 |
| F | -25.70876 | -6.657121 | -21.45191 | -21.96617 |
| G | 50.77995 | 49.97160 | 59.26845 | 59.11030 |
| H | -17.46004 | 0.000000 | -12.43903 | -12.85103 |
| Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 | Chase, 1998 |
| Comment | red, v phase; Data last reviewed in June, 1961 | white phase; Data last reviewed in June, 1961 | red, iv phase; Data last reviewed in June, 1961 | black phase; Data last reviewed in June, 1961 |
References
Go To: Top, Condensed phase thermochemistry data, 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]
Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A.,
CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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