trimagnesium dinitride


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. - 823.823. - 2500.
A 95.87134125.8325
B 29.00855-3.583894
C 1.9794771.890745
D -0.884866-0.326447
E -0.012757-0.066785
F -491.0091-502.9461
G 195.0836229.5732
H -461.0768-461.0768
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1960 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)
298.104.587.8187.87-0.02
300.104.688.5187.870.19
400.107.7119.092.0110.81
500.110.7143.499.9221.72
600.113.8163.8108.932.95
700.116.8181.6118.144.48
800.119.9197.4127.056.31
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
823.123.9202.7128.860.87
900.123.8213.8135.670.41
1000.123.7226.9144.182.79
1100.123.7238.7152.195.16
1200.123.6249.4159.8107.5
1300.123.6259.3167.1119.9
1400.123.6268.5174.0132.2
1500.123.6277.0180.6144.6
1600.123.6285.0186.9157.0
1700.123.6292.5192.9169.3
1800.123.6299.5198.6181.7
1900.123.6306.2204.1194.0
2000.123.6312.5209.3206.4
2100.123.6318.6214.4218.8
2200.123.6324.3219.3231.1
2300.123.6329.8224.0243.5
2400.123.6335.1228.5255.8
2500.123.6340.1232.8268.2

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