CNC Radical


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. - 1100.1100. - 6000.
A 7.39377014.72520
B 16.907000.128375
C -14.77150-0.035550
D 4.6422810.003584
E -0.027756-0.676945
F 130.0720126.7290
G 59.5531170.18549
H 133.0000133.0000
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in March, 1967 Data last reviewed in March, 1967
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
298.10.9355.1855.19-0.00
300.10.9555.2555.190.02
400.11.9258.5555.631.17
500.12.6261.2856.492.39
600.13.1563.6357.493.68
700.13.5365.6958.525.02
800.13.8067.5259.536.39
900.14.0069.1560.517.78
1000.14.1470.6461.459.18
1100.14.2771.9962.3510.60
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
1100.14.2771.9962.3510.61
1200.14.3673.2463.2012.04
1300.14.4474.3964.0213.48
1400.14.5075.4664.8014.92
1500.14.5576.4665.5516.38
1600.14.5977.4066.2617.83
1700.14.6278.2966.9419.29
1800.14.6579.1367.5920.76
1900.14.6879.9268.2222.23
2000.14.7080.6768.8223.69
2100.14.7281.3969.4125.17
2200.14.7382.0769.9726.64
2300.14.7582.7370.5128.11
2400.14.7683.3671.0329.59
2500.14.7783.9671.5431.06
2600.14.7884.5472.0232.54
2700.14.7985.1072.5034.02
2800.14.8085.6472.9635.50
2900.14.8186.1673.4036.98
3000.14.8186.6673.8438.46
3100.14.8287.1474.2639.94
3200.14.8287.6174.6741.42
3300.14.8388.0775.0742.91
3400.14.8388.5175.4644.39
3500.14.8488.9475.8445.87
3600.14.8489.3676.2147.36
3700.14.8589.7776.5748.84
3800.14.8590.1676.9250.33
3900.14.8590.5577.2651.81
4000.14.8690.9377.6053.30
4100.14.8691.2977.9354.78
4200.14.8691.6578.2556.27
4300.14.8792.0078.5757.76
4400.14.8792.3478.8859.24
4500.14.8892.6879.1860.73
4600.14.8893.0079.4862.22
4700.14.8893.3279.7763.71
4800.14.8993.6480.0565.19
4900.14.8993.9480.3466.68
5000.14.9094.2580.6168.17
5100.14.9094.5480.8869.66
5200.14.9194.8381.1571.15
5300.14.9295.1181.4172.65
5400.14.9295.3981.6674.14
5500.14.9395.6781.9275.63
5600.14.9495.9482.1677.12
5700.14.9496.2082.4178.62
5800.14.9596.4682.6580.11
5900.14.9696.7282.8881.61
6000.14.9796.9783.1283.11

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