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Dipotassium


Gas 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.

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Temperature (K) 298. - 1300.1300. - 6000.
A 5.4155817.412359
B 12.80000-1.382941
C -13.462400.276767
D 3.826100-0.018846
E 0.0835362.970591
F 27.7701032.06570
G 63.4530173.42949
H 29.5609929.56099
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1983 Data last reviewed in December, 1983
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
298.9.0859.6859.68-0.00
300.9.0859.7459.680.02
400.9.1562.3560.030.93
500.9.2664.4160.711.85
600.9.3166.1061.472.78
700.9.2667.5462.243.71
800.9.1368.7662.984.63
900.8.9269.8363.685.53
1000.8.6670.7664.356.41
1100.8.3771.5764.977.26
1200.8.0672.2865.558.08
1300.7.7672.9266.098.87
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
1300.7.8072.9266.098.88
1400.7.4873.4866.609.64
1500.7.2273.9967.0710.37
1600.6.9974.4567.5211.08
1700.6.8074.8767.9411.77
1800.6.6375.2568.3412.44
1900.6.4875.6068.7113.10
2000.6.3575.9369.0613.74
2100.6.2376.2469.4014.37
2200.6.1276.5369.7214.99
2300.6.0376.8070.0215.59
2400.5.9477.0570.3116.19
2500.5.8777.2970.5816.78
2600.5.8077.5270.8417.37
2700.5.7377.7471.0917.94
2800.5.6877.9571.3418.51
2900.5.6278.1471.5719.08
3000.5.5878.3371.7919.64
3100.5.5378.5272.0020.19
3200.5.4978.6972.2120.74
3300.5.4678.8672.4121.29
3400.5.4379.0272.6021.84
3500.5.4079.1872.7922.38
3600.5.3779.3372.9722.92
3700.5.3579.4873.1423.45
3800.5.3379.6273.3123.98
3900.5.3179.7673.4724.52
4000.5.2979.8973.6325.05
4100.5.2780.0273.7925.57
4200.5.2680.1573.9426.10
4300.5.2580.2774.0826.63
4400.5.2380.3974.2227.15
4500.5.2280.5174.3627.67
4600.5.2180.6374.5028.19
4700.5.2080.7474.6328.72
4800.5.2080.8574.7629.24
4900.5.1980.9574.8829.75
5000.5.1881.0675.0030.27
5100.5.1781.1675.1230.79
5200.5.1681.2675.2431.31
5300.5.1681.3675.3631.82
5400.5.1581.4675.4732.34
5500.5.1481.5575.5832.85
5600.5.1381.6475.6933.37
5700.5.1281.7375.7933.88
5800.5.1181.8275.8934.39
5900.5.1081.9176.0034.90
6000.5.0982.0076.0935.41

References

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