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

magnesium oxide


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) 5000. - 6000.
A 33.19530
B 1.944521
C -0.206813
D 0.020861
E 33.86740
F 86.63020
G 276.9900
H 58.15760
ReferenceChase, 1998
Comment Data last reviewed in December, 1974
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
5000.41.71337.7296.4206.6
5100.41.80338.6297.2210.8
5200.41.90339.4298.0215.0
5300.42.00340.2298.8219.2
5400.42.11341.0299.6223.4
5500.42.22341.7300.4227.6
5600.42.34342.5301.1231.8
5700.42.47343.3301.8236.1
5800.42.59344.0302.6240.3
5900.42.73344.7303.3244.6
6000.42.86345.4304.0248.9

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