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tantalum carbide


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
Deltafliquid-33.96kJ/molReviewChase, 1998Data last reviewed in December, 1973
Quantity Value Units Method Reference Comment
liquid,1 bar68.21J/mol*KReviewChase, 1998Data last reviewed in December, 1973
Quantity Value Units Method Reference Comment
Deltafsolid-144.10kJ/molReviewChase, 1998Data last reviewed in December, 1973
Quantity Value Units Method Reference Comment
solid42.29J/mol*KReviewChase, 1998Data last reviewed in December, 1973

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) 4273. - 6000.
A 66.94400
B 0.000000
C 0.000000
D 0.000000
E 0.000000
F -84.00510
G 112.5228
H -33.95504
ReferenceChase, 1998
Comment Data last reviewed in December, 1973

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. - 4273.
A 44.29224
B 7.673707
C -0.091309
D 0.010861
E -0.875548
F -160.6074
G 88.68114
H -144.0970
ReferenceChase, 1998
Comment Data last reviewed in December, 1973

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]


Notes

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