Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

iron difluoride


Solid 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. - 1373.
A 61.53451
B 39.87026
C -23.89562
D 4.905782
E -0.297405
F -726.7650
G 148.8768
H -705.8408
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)
298.68.0786.9286.98-0.02
300.68.1787.3786.980.12
400.72.11107.689.707.14
500.74.92124.094.9714.50
600.77.09137.8101.022.11
700.78.81149.8107.129.91
800.80.18160.5113.137.86
900.81.27170.0118.945.93
1000.82.12178.6124.554.10
1100.82.76186.4129.862.35
1200.83.24193.7134.870.65
1300.83.58200.3139.678.99

References

Go To: Top, Solid 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, Solid Phase Heat Capacity (Shomate Equation), References