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niobium dioxide


Solid Phase Heat Capacity (Shomate Equation)

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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.

View table.

Temperature (K) 298. - 1090.1090. - 1200.1200. - 2175.
A 15.8938310.1683319.85000
B -2.69134817.306070.000001
C 11.85832-8.919408-0.000002
D -3.9355411.5188806.480904×10-7
E -0.2051422.136621-0.000001
F -195.4039-191.0354-196.3203
G 31.4189821.8299734.55258
H -190.0000-190.0000-190.0000
ReferenceChase, 1998Chase, 1998Chase, 1998
Comment Data last reviewed in December, 1973 Data last reviewed in December, 1973 Data last reviewed in December, 1973

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References

Go To: Top, Solid Phase Heat Capacity (Shomate Equation), 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]


Notes

Go To: Top, Solid Phase Heat Capacity (Shomate Equation), References