ditantalum pentaoxide


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. to 2058.
A 131.9759
B 80.02737
C -33.89676
D 5.280459
E -1.625722
F -2094.125
G 271.0261
H -2045.976
ReferenceChase, 1998
Comment Data last reviewed in December, 1972
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.134.6142.8143.1-0.1
300.135.0143.7143.10.17
400.148.7184.6148.514.42
500.157.7218.8159.329.76
600.164.4248.2171.745.88
700.169.9273.9184.562.60
800.174.5296.9197.179.83
900.178.4317.7209.497.48
1000.181.8336.7221.2115.5
1100.184.7354.1232.5133.8
1200.187.2370.3243.3152.4
1300.189.4385.4253.7171.2
1400.191.2399.5263.6190.3
1500.192.8412.7273.1209.5
1600.194.2425.2282.2228.8
1700.195.4437.1291.0248.3
1800.196.5448.3299.4267.9
1900.197.4458.9307.5287.6
2000.198.3469.1315.4307.4

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