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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
Deltafliquid13.65kJ/molReviewChase, 1998Data last reviewed in June, 1979
Quantity Value Units Method Reference Comment
liquid,1 bar39.18J/mol*KReviewChase, 1998Data last reviewed in June, 1979
Quantity Value Units Method Reference Comment
solid,1 bar30.72 ± 0.10J/mol*KReviewCox, Wagman, et al., 1984CODATA 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) 1939. - 3630.956
A 47.23694
B 1.975192×10-8
C -5.335145×10-9
D 4.904109×10-10
E 1.564855×10-8
F -22.05273
G 66.20218
H 13.65202
ReferenceChase, 1998
Comment Data last reviewed in June, 1979

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. - 700.700. - 1700.298. - 1939.
A 22.6194244.3717423.05660
B 18.98795-44.092255.541331
C -18.1873531.70602-2.055881
D 7.0807920.0522091.611745
E -0.1434570.036168-0.056075
F -7.922279-12.72011-0.433228
G 52.4096293.0877264.12691
H 0.0000000.0000006.860003
ReferenceChase, 1998Chase, 1998Chase, 1998
Comment «alpha» phase; Data last reviewed in June, 1979 «alpha» phase; Data last reviewed in June, 1979 «beta» phase; Data last reviewed in June, 1979

References

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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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