magnesium dihydride


Solid 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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 2000.
A 3.180321
B 24.65600
C -14.42830
D 2.911011
E -0.079568
F -20.39400
G 4.082300
H -18.20010
ReferenceChase, 1998
Comment Data last reviewed in September, 1963
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
298.8.437.417.43-0.01
300.8.477.477.430.01
400.10.4210.197.790.96
500.11.9512.688.522.08
600.13.1914.979.413.34
700.14.2117.0910.364.71
800.15.0419.0411.326.18
900.15.7120.8512.287.71
1000.16.2422.5313.229.31
1100.16.6524.1014.1410.96
1200.16.9725.5715.0312.64
1300.17.2026.9315.9014.35
1400.17.3728.2116.7316.08
1500.17.4929.4217.5417.82
1600.17.5930.5518.3119.57
1700.17.6731.6219.0721.34
1800.17.7732.6319.7923.11
1900.17.8933.5920.4924.89
2000.18.0534.5121.1726.69

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