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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 (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. - 1800.1800. - 2350.
A 10.1857425.12664
B 29.244151.975493
C -18.021370.338395
D 4.212326-0.040032
E -0.550999-2.635578
F -6.036299-14.43597
G 7.08907725.59930
H 0.0000000.000000
ReferenceChase, 1998Chase, 1998
Comment β-rhombohedral phase; Data last reviewed in June, 1983 β-rhombohedral phase; Data last reviewed in June, 1983
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.11.215.815.83-0.00
300.11.335.895.830.02
400.15.839.826.331.40
500.18.6313.687.423.13
600.20.6217.268.765.10
700.22.1520.5610.227.24
800.23.3423.5911.709.51
900.24.3026.4013.1811.90
1000.25.0729.0014.6314.37
1100.25.7031.4216.0516.91
1200.26.2233.6817.4319.50
1300.26.6835.8018.7622.15
1400.27.0837.7920.0524.84
1500.27.4839.6721.2927.57
1600.27.8841.4622.5030.33
1700.28.3243.1623.6733.14
1800.28.8344.7924.7936.00
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
1800.28.7344.8024.8036.01
1900.29.1046.3625.8938.90
2000.29.4547.8726.9541.83
2100.29.8049.3127.9844.79
2200.30.1450.7128.9847.79
2300.30.4852.0529.9650.82

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

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