sodium
- Formula: Na
- Molecular weight: 22.98976928
- IUPAC Standard InChIKey: KEAYESYHFKHZAL-UHFFFAOYSA-N
- CAS Registry Number: 7440-23-5
- Chemical structure:
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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 | 0.576 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1962 |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid,1 bar | 13.83 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1962 |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 12.26 ± 0.048 | cal/mol*K | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
Quantity | Value | Units | Method | Reference | Comment |
S°solid | 12.30 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1962 |
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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 370.98 to 1170.525 |
---|---|
A | 9.621671 |
B | -6.749162 |
C | 4.945990 |
D | -0.870428 |
E | -0.019090 |
F | -2.099021 |
G | 27.16649 |
H | 0.575048 |
Reference | Chase, 1998 |
Comment | Data last reviewed in June, 1962 |
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 (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. to 370. |
---|---|
A | 17.36060 |
B | -2.268540 |
C | -174.6970 |
D | 338.0779 |
E | -0.300998 |
F | -5.209052 |
G | 37.06891 |
H | 0.000000 |
Reference | Chase, 1998 |
Comment | Data last reviewed in June, 1962 |
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 Entropy of solid at standard conditions S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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