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dipotassium oxide


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. - 700.700. - 2000.
A 245.010472.55098
B -567.049241.39097
C 778.7219-0.728497
D -346.26410.218564
E -4.6533610.066026
F -432.8599-386.1610
G 501.8708170.5629
H -363.1712-363.1712
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1963 Data last reviewed in June, 1963
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.83.6293.9994.16-0.05
300.83.9394.5594.160.12
400.91.54120.097.558.98
500.94.27140.7104.218.28
600.97.40158.2111.827.85
700.101.4173.5119.537.79
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
700.101.4173.4119.537.77
800.105.4187.2127.148.11
900.109.5199.9134.558.85
1000.113.5211.6141.670.00
1100.117.5222.6148.581.55
1200.121.6233.0155.193.51
1300.125.6242.9161.5105.9
1400.129.7252.4167.6118.6
1500.133.8261.5173.6131.8
1600.137.8270.2179.4145.4
1700.141.9278.7185.0159.4
1800.146.0286.9190.4173.8
1900.150.1294.9195.7188.6
2000.154.2302.8200.9203.8

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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