sodium cyanide


Gas 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) 3000. - 6000.
A 59.73999
B 1.429452
C -0.284605
D 0.019477
E -3.516373
F 68.63894
G 305.4035
H 94.26594
ReferenceChase, 1998
Comment Data last reviewed in March, 1966
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
3000.61.60374.4321.4159.0
3100.61.65376.4323.1165.2
3200.61.69378.4324.8171.4
3300.61.73380.3326.5177.5
3400.61.77382.1328.1183.7
3500.61.80383.9329.7189.9
3600.61.83385.7331.2196.1
3700.61.86387.4332.7202.3
3800.61.89389.0334.2208.4
3900.61.91390.6335.6214.6
4000.61.93392.2337.0220.8
4100.61.95393.7338.3227.0
4200.61.97395.2339.7233.2
4300.61.98396.7341.0239.4
4400.62.00398.1342.3245.6
4500.62.01399.5343.5251.8
4600.62.02400.8344.8258.0
4700.62.03402.2346.0264.2
4800.62.05403.5347.2270.4
4900.62.06404.8348.3276.6
5000.62.07406.0349.5282.8
5100.62.08407.3350.6289.0
5200.62.09408.5351.7295.2
5300.62.10409.6352.8301.5
5400.62.11410.8353.8307.7
5500.62.12411.9354.9313.9
5600.62.13413.1355.9320.1
5700.62.14414.2356.9326.3
5800.62.15415.2357.9332.5
5900.62.17416.3358.9338.7
6000.62.18417.3359.9344.9

References

Go To: Top, Gas 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, Gas Phase Heat Capacity (Shomate Equation), References