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sodium fluoride


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) 3500. - 6000.
A 36.95560
B 1.073858
C -0.105601
D 0.009001
E -0.277921
F -302.4505
G 260.4368
H -290.4533
ReferenceChase, 1998
Comment Data last reviewed in December, 1968
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
3500.39.78310.0274.9122.8
3600.39.85311.1275.9126.8
3700.39.92312.2276.8130.8
3800.39.99313.3277.8134.8
3900.40.05314.3278.7138.8
4000.40.12315.3279.6142.8
4100.40.19316.3280.5146.8
4200.40.25317.3281.4150.8
4300.40.32318.2282.2154.9
4400.40.39319.2283.0158.9
4500.40.46320.1283.9163.0
4600.40.52321.0284.6167.0
4700.40.59321.8285.4171.1
4800.40.66322.7286.2175.1
4900.40.73323.5287.0179.2
5000.40.80324.3287.7183.3
5100.40.87325.2288.4187.3
5200.40.94325.9289.1191.4
5300.41.01326.7289.8195.5
5400.41.08327.5290.5199.6
5500.41.16328.2291.2203.8
5600.41.23329.0291.9207.9
5700.41.30329.7292.5212.0
5800.41.38330.4293.2216.1
5900.41.46331.1293.8220.3
6000.41.53331.8294.4224.4

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