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Disodium


Gas Phase Heat Capacity (Shomate Equation)

Go To: Top, References, Notes

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

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Temperature (K) 298. - 1400.1400. - 2800.2800. - 6000.
A 8.57356222.23530-118.2720
B 0.987445-10.5207055.28989
C 0.7393191.798310-8.050161
D -0.9090110.0720350.382342
E 0.006706-4.515510204.8050
F 31.3732118.38250295.8819
G 65.1238173.5485983.63401
H 33.9555933.9555933.95559
ReferenceChase, 1998Chase, 1998Chase, 1998
Comment Data last reviewed in December, 1983 Data last reviewed in December, 1983 Data last reviewed in December, 1983
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
298.8.9855.0355.03-0.00
300.8.9955.0955.030.02
400.9.0757.6855.380.92
500.9.1759.7256.051.83
600.9.2561.3956.812.75
700.9.3362.8357.573.68
800.9.3864.0858.314.62
900.9.4165.1859.015.56
1000.9.4066.1759.686.50
1100.9.3567.0760.317.44
1200.9.2667.8860.918.37
1300.9.1168.6161.479.28
1400.8.9169.2862.0110.19
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
1400.8.9269.2862.0110.19
1500.8.7469.8962.5111.07
1600.8.5470.4562.9911.93
1700.8.3470.9663.4412.78
1800.8.1571.4363.8813.60
1900.7.9871.8764.2814.41
2000.7.8372.2764.6715.20
2100.7.7272.6565.0415.97
2200.7.6373.0165.4016.74
2300.7.5773.3565.7417.50
2400.7.5673.6766.0618.26
2500.7.5873.9866.3719.01
2600.7.6474.2866.6719.77
2700.7.7474.5766.9620.54
2800.7.8874.8567.2321.32
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
2800.7.9474.8567.2321.33
2900.8.0475.1367.5022.12
3000.8.2375.4167.7622.94
3100.8.4775.6868.0123.77
3200.8.7575.9568.2624.63
3300.9.0776.2368.4925.52
3400.9.4076.5068.7226.45
3500.9.7476.7868.9527.40
3600.10.0877.0669.1728.39
3700.10.4277.3469.3929.42
3800.10.7577.6269.6030.48
3900.11.0677.9169.8131.57
4000.11.3678.1970.0232.69
4100.11.6378.4770.2233.84
4200.11.8878.7670.4235.01
4300.12.1079.0470.6236.21
4400.12.3079.3270.8137.43
4500.12.4779.6071.0038.67
4600.12.6179.8771.1939.93
4700.12.7380.1571.3841.19
4800.12.8280.4171.5742.47
4900.12.8880.6871.7543.76
5000.12.9180.9471.9345.05
5100.12.9181.2072.1146.34
5200.12.8981.4572.2947.63
5300.12.8581.6972.4648.92
5400.12.7881.9372.6450.20
5500.12.6982.1672.8151.47
5600.12.5782.3972.9852.73
5700.12.4482.6173.1453.99
5800.12.2982.8373.3155.22
5900.12.1283.0473.4756.44
6000.11.9483.2473.6357.65

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