calcium iodide


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) 2500. to 6000.
A 14.88740
B 0.014136
C -0.003828
D 0.000326
E -0.035727
F -66.25920
G 96.10129
H -61.70010
ReferenceChase, 1998
Comment Data last reviewed in June, 1974
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
2500.14.90109.896.6932.70
2600.14.90110.497.2034.19
2700.14.90110.997.7035.68
2800.14.90111.598.1837.17
2900.14.90112.098.6538.66
3000.14.90112.599.1040.15
3100.14.90113.099.5441.64
3200.14.90113.499.9743.13
3300.14.90113.9100.444.62
3400.14.90114.4100.846.11
3500.14.90114.8101.247.60
3600.14.90115.2101.649.09
3700.14.90115.6101.950.58
3800.14.90116.0102.352.07
3900.14.90116.4102.753.56
4000.14.90116.8103.055.05
4100.14.90117.1103.456.54
4200.14.90117.5103.758.03
4300.14.90117.9104.059.52
4400.14.90118.2104.361.01
4500.14.90118.5104.662.50
4600.14.90118.9104.963.99
4700.14.90119.2105.265.48
4800.14.90119.5105.566.97
4900.14.90119.8105.868.46
5000.14.90120.1106.169.95
5100.14.90120.4106.471.44
5200.14.90120.7106.772.93
5300.14.90121.0106.974.42
5400.14.90121.2107.275.91
5500.14.90121.5107.477.40
5600.14.90121.8107.778.89
5700.14.90122.1107.980.38
5800.14.90122.3108.281.88
5900.14.90122.6108.483.37
6000.14.90122.8108.784.86

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