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Condensed phase thermochemistry data

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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
Deltafliquid1.85kJ/molReviewChase, 1998Data last reviewed in September, 1977
Quantity Value Units Method Reference Comment
liquid,1 bar36.85J/mol*KReviewChase, 1998Data last reviewed in September, 1977
Quantity Value Units Method Reference Comment
solid,1 bar32.054 ± 0.050J/mol*KReviewCox, Wagman, et al., 1984rhombic 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) 388.36 - 432.432. - 882.117
A -4540.970-37.93350
B 26065.60133.2420
C -55520.70-95.32450
D 42012.2024.00940
E 54.588607.654530
F 787.807029.78810
G -10826.30-13.15340
H 1.8537811.853781
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in September, 1977 Data last reviewed in September, 1977

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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View table.

Temperature (K) 298. - 388.36298. - 388.36
A 21.2197824.23749
B 3.865858-4.983060
C 22.2746133.00900
D -10.31908-15.29616
E -0.122518-0.182237
F -7.085604-7.516263
G 54.9957561.49141
H 0.0000000.360001
ReferenceChase, 1998Chase, 1998
Comment orthorhombic phase; Data last reviewed in September, 1977 monoclinic phase; Data last reviewed in September, 1977

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

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