Magnesium boride


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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 2000.
A 45.96626
B 102.5729
C -38.90463
D 5.642040
E -0.252315
F -123.8050
G 77.20610
H -105.0180
ReferenceChase, 1998
Comment Data last reviewed in March, 1965
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.70.3951.8751.93-0.02
300.70.5952.3451.930.12
400.79.5573.9154.817.64
500.87.2292.5160.5315.99
600.94.02109.067.2625.06
700.100.1124.074.3134.77
800.105.6137.781.3945.06
900.110.6150.488.3655.88
1000.115.0162.395.1767.16
1100.119.0173.5101.878.87
1200.122.6184.0108.290.95
1300.125.8193.9114.4103.4
1400.128.7203.4120.4116.1
1500.131.2212.3126.3129.1
1600.133.5220.9131.9142.3
1700.135.5229.0137.4155.8
1800.137.4236.8142.7169.4
1900.139.0244.3147.9183.3
2000.140.6251.5152.9197.2

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