CNC Radical


Gas Phase Heat Capacity (Shomate Equation)

Go To: Top, References, Notes

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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) 298. - 1100.1100. - 6000.
A 30.9355361.61024
B 70.738890.537121
C -61.80396-0.148743
D 19.423300.014995
E -0.116133-2.832339
F 544.2212530.2341
G 249.1702293.6561
H 556.4720556.4720
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in March, 1967 Data last reviewed in March, 1967
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.45.73230.9230.9-0.01
300.45.83231.2230.90.08
400.49.86245.0232.84.88
500.52.82256.4236.410.02
600.55.00266.2240.615.42
700.56.59274.9244.821.00
800.57.74282.5249.126.72
900.58.56289.3253.232.54
1000.59.18295.5257.138.42
1100.59.72301.2260.944.37
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
1100.59.70301.2260.944.37
1200.60.10306.4264.450.36
1300.60.41311.2267.956.39
1400.60.67315.7271.162.44
1500.60.87319.9274.268.52
1600.61.04323.9277.274.62
1700.61.19327.6280.180.73
1800.61.31331.1282.886.85
1900.61.41334.4285.492.99
2000.61.50337.5288.099.14
2100.61.58340.5290.4105.3
2200.61.65343.4292.7111.5
2300.61.71346.1295.0117.6
2400.61.76348.8297.2123.8
2500.61.80351.3299.3130.0
2600.61.85353.7301.3136.2
2700.61.88356.1303.3142.3
2800.61.92358.3305.3148.5
2900.61.95360.5307.1154.7
3000.61.97362.6308.9160.9
3100.62.00364.6310.7167.1
3200.62.02366.6312.4173.3
3300.62.04368.5314.1179.5
3400.62.06370.3315.7185.7
3500.62.08372.1317.3191.9
3600.62.10373.9318.8198.1
3700.62.11375.6320.4204.4
3800.62.13377.2321.8210.6
3900.62.15378.9323.3216.8
4000.62.16380.4324.7223.0
4100.62.18382.0326.1229.2
4200.62.19383.5327.4235.4
4300.62.21384.9328.7241.7
4400.62.22386.4330.0247.9
4500.62.24387.8331.3254.1
4600.62.26389.1332.5260.3
4700.62.28390.5333.8266.5
4800.62.30391.8334.9272.8
4900.62.32393.1336.1279.0
5000.62.34394.3337.3285.2
5100.62.36395.6338.4291.5
5200.62.38396.8339.5297.7
5300.62.41398.0340.6304.0
5400.62.44399.1341.7310.2
5500.62.47400.3342.7316.4
5600.62.50401.4343.8322.7
5700.62.53402.5344.8328.9
5800.62.56403.6345.8335.2
5900.62.60404.7346.8341.5
6000.62.64405.7347.8347.7

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