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potassium sulfate


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. - 1200.298. - 1342.
A 139.5050114.3424
B -1.19988481.29554
C 136.8080-0.000942
D -47.14322-0.016197
E -1.6639990.000141
F -1485.964-1461.948
G 329.6528306.4152
H -1437.706-1424.246
ReferenceChase, 1998Chase, 1998
Comment «alpha» phase; Data last reviewed in June, 1978 «beta» phase; Data last reviewed in June, 1978
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.131.3175.4175.6-0.04
300.131.7176.3175.60.22
400.147.5216.5180.914.22
500.160.6250.8191.529.64
600.173.2281.2204.046.33
700.186.1308.9217.064.29
800.199.4334.6230.183.56
900.212.8358.9243.1104.2
1000.226.3382.0255.8126.1
1100.239.6404.2268.3149.4
1200.252.4425.6280.5174.0
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.138.6192.2192.3-0.02
300.138.7193.1192.30.26
400.146.9234.2197.814.54
500.155.0267.8208.529.63
600.163.1296.8220.945.54
700.171.2322.5233.662.25
800.179.4345.9246.279.78
900.187.5367.5258.598.13
1000.195.6387.7270.4117.3
1100.203.7406.7282.0137.3
1200.211.9424.8293.1158.0
1300.220.0442.1303.9179.6

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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