Magnesium carbide


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. to 2500.
A 118.6859
B 10.79288
C -0.056283
D 0.012301
E -2.500752
F 35.19869
G 226.6473
H 79.49600
ReferenceChase, 1998
Comment Data last reviewed in December, 1960
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.93.74100.3100.4-0.06
300.94.13100.9100.40.13
400.107.4130.0104.310.29
500.114.1154.8112.021.39
600.118.2176.0120.933.02
700.121.1194.4130.144.99
800.123.4210.7139.257.22
900.125.3225.4148.069.66
1000.126.9238.7156.482.27
1100.128.4250.8164.495.04
1200.129.8262.1172.1108.0
1300.131.2272.5179.4121.0
1400.132.4282.3186.4134.2
1500.133.7291.5193.1147.5
1600.134.9300.1199.6160.9
1700.136.1308.3205.7174.5
1800.137.2316.2211.6188.1
1900.138.4323.6217.3201.9
2000.139.5330.7222.8215.8
2100.140.6337.6228.1229.8
2200.141.8344.1233.3243.9
2300.142.9350.5238.2258.2
2400.144.0356.6243.0272.5
2500.145.1362.5247.7287.0

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