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

magnesium oxide


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. - 3105.
A 47.25995
B 5.681621
C -0.872665
D 0.104300
E -1.053955
F -619.1316
G 76.46176
H -601.2408
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)
298.37.0126.8426.92-0.03
300.37.1827.0826.920.05
400.42.8138.6628.444.08
500.45.6848.5531.508.52
600.47.4557.0435.0713.18
700.48.6964.4638.7518.00
800.49.6571.0242.3822.91
900.50.4476.9245.9027.92
1000.51.1282.2749.2733.00
1100.51.7287.1752.5038.14
1200.52.2791.6955.5843.34
1300.52.7895.9058.5248.59
1400.53.2599.8361.3353.90
1500.53.70103.564.0259.24
1600.54.13107.066.6064.64
1700.54.54110.369.0770.07
1800.54.94113.471.4575.54
1900.55.33116.473.7481.06
2000.55.70119.275.9486.61
2100.56.07122.078.0792.20
2200.56.43124.680.1397.82
2300.56.78127.182.11103.5
2400.57.13129.584.04109.2
2500.57.47131.985.91114.9
2600.57.81134.187.72120.7
2700.58.15136.389.48126.5
2800.58.48138.491.19132.3
2900.58.82140.592.85138.2
3000.59.15142.594.48144.1
3100.59.48144.496.06150.0

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