trisilicon tetranitride


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 3000.
A 55.63214
B 157.7037
C -63.61395
D 8.610924
E 0.213440
F -767.0653
G 137.2900
H -744.7520
ReferenceChase, 1998
Comment α phase; Data last reviewed in March, 1967
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.99.61113.0113.00.01
300.99.82113.7113.00.21
400.110.4143.8117.010.72
500.120.5169.6125.022.27
600.129.8192.4134.434.80
700.138.2213.0144.248.21
800.145.8232.0154.062.42
900.152.6249.6163.677.34
1000.158.5266.0173.092.91
1100.163.8281.3182.2109.0
1200.168.3295.8191.1125.6
1300.172.2309.4199.6142.7
1400.175.5322.3208.0160.1
1500.178.2334.5216.0177.7
1600.180.5346.1223.8195.7
1700.182.3357.0231.3213.8
1800.183.7367.5238.6232.1
1900.184.7377.5245.6250.5
2000.185.5387.0252.4269.1
2100.186.1396.0259.1287.6
2200.186.4404.7265.5306.3
2300.186.6413.0271.7324.9
2400.186.8420.9277.8343.6
2500.186.9428.6283.7362.3
2600.187.0435.9289.4381.0
2700.187.2443.0294.9399.7
2800.187.5449.8300.3418.4
2900.188.0456.4305.6437.2
3000.188.7462.7310.7456.0

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