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potassium hydride


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 (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. - 1100.1100. - 6000.
A 23.2014937.25316
B 34.073321.023173
C -29.73176-0.018147
D 9.5333280.001255
E 0.005323-1.174659
F 114.8391108.6116
G 217.2082237.9888
H 123.0100123.0100
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in March, 1963 Data last reviewed in March, 1963
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.31.03198.0198.0-0.01
300.31.06198.2198.00.06
400.32.72207.4199.33.25
500.34.02214.8201.76.59
600.35.02221.1204.410.04
700.35.77226.6207.213.58
800.36.32231.4209.917.19
900.36.74235.7212.520.84
1000.37.08239.6215.124.53
1100.37.40243.1217.528.26
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
1100.37.39243.1217.428.26
1200.37.64246.4219.732.01
1300.37.86249.4221.935.79
1400.38.05252.2224.039.58
1500.38.23254.9225.943.40
1600.38.39257.3227.847.23
1700.38.54259.7229.651.07
1800.38.68261.9231.454.94
1900.38.81264.0233.058.81
2000.38.94266.0234.662.70
2100.39.07267.9236.266.60
2200.39.19269.7237.670.51
2300.39.30271.4239.174.44
2400.39.42273.1240.578.37
2500.39.53274.7241.882.32
2600.39.64276.3243.186.28
2700.39.75277.8244.490.25
2800.39.85279.2245.694.23
2900.39.96280.6246.898.22
3000.40.06282.0247.9102.2
3100.40.17283.3249.0106.2
3200.40.27284.6250.1110.3
3300.40.37285.8251.2114.3
3400.40.47287.0252.2118.3
3500.40.57288.2253.2122.4
3600.40.67289.3254.2126.4
3700.40.77290.5255.2130.5
3800.40.87291.5256.1134.6
3900.40.96292.6257.0138.7
4000.41.06293.6257.9142.8
4100.41.16294.7258.8146.9
4200.41.26295.7259.7151.0
4300.41.35296.6260.5155.1
4400.41.45297.6261.4159.3
4500.41.55298.5262.2163.4
4600.41.64299.4263.0167.6
4700.41.74300.3263.8171.8
4800.41.83301.2264.5175.9
4900.41.93302.1265.3180.1
5000.42.03302.9266.0184.3
5100.42.12303.7266.8188.5
5200.42.22304.6267.5192.8
5300.42.31305.4268.2197.0
5400.42.41306.2268.9201.2
5500.42.50306.9269.6205.5
5600.42.60307.7270.3209.7
5700.42.69308.5270.9214.0
5800.42.79309.2271.6218.3
5900.42.88309.9272.2222.5
6000.42.98310.7272.9226.8

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