iron difluoride


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) 3000. - 6000.
A 62.73657
B 2.239336
C -0.646198
D 0.050511
E 1.021960
F -407.1086
G 340.4655
H -389.5304
ReferenceChase, 1998
Comment Data last reviewed in September, 1965
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
3000.65.12413.6355.1175.6
3100.65.08415.7357.0182.1
3200.65.04417.8358.9188.6
3300.65.00419.8360.7195.1
3400.64.95421.7362.4201.6
3500.64.91423.6364.2208.1
3600.64.86425.4365.8214.6
3700.64.81427.2367.5221.1
3800.64.76429.0369.1227.5
3900.64.70430.6370.6234.0
4000.64.65432.3372.2240.5
4100.64.60433.9373.6246.9
4200.64.54435.4375.1253.4
4300.64.49436.9376.5259.8
4400.64.43438.4377.9266.3
4500.64.38439.9379.3272.7
4600.64.33441.3380.6279.2
4700.64.28442.7381.9285.6
4800.64.23444.0383.2292.0
4900.64.18445.3384.4298.4
5000.64.13446.6385.7304.9
5100.64.09447.9386.9311.3
5200.64.05449.2388.1317.7
5300.64.01450.4389.2324.1
5400.63.97451.6390.4330.5
5500.63.94452.7391.5336.9
5600.63.92453.9392.6343.3
5700.63.89455.0393.7349.7
5800.63.87456.1394.7356.0
5900.63.86457.2395.8362.4
6000.63.85458.3396.8368.8

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