Water-d


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 (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. to 1500.1500. to 6000.
A 6.69700111.12080
B 3.2976011.495251
C 0.894373-0.243794
D -0.5774620.015011
E 0.029468-2.596590
F -60.69560-66.52481
G 54.9385055.87830
H -58.64510-58.64510
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1977 Data last reviewed in June, 1977
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
298.8.0847.6847.68-0.00
300.8.0847.7447.680.02
400.8.3150.0948.000.83
500.8.6251.9748.621.68
600.8.9553.5749.312.56
700.9.3154.9850.023.47
800.9.6656.2550.724.42
900.10.0057.4051.405.40
1000.10.3458.4852.066.42
1100.10.6659.4852.697.47
1200.10.9660.4253.298.55
1300.11.2461.3153.879.66
1400.11.5062.1554.4410.80
1500.11.7262.9554.9811.96
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
1500.11.7162.9554.9811.96
1600.11.9463.7155.5013.14
1700.12.1364.4456.0014.35
1800.12.3165.1456.4915.57
1900.12.4765.8156.9716.81
2000.12.6166.4557.4218.06
2100.12.7467.0757.8719.33
2200.12.8567.6758.3020.61
2300.12.9668.2458.7221.90
2400.13.0668.8059.1323.20
2500.13.1569.3359.5324.51
2600.13.2469.8559.9125.83
2700.13.3270.3560.2927.16
2800.13.3970.8360.6628.49
2900.13.4671.3161.0229.84
3000.13.5371.7661.3731.19
3100.13.5972.2161.7132.54
3200.13.6572.6462.0533.90
3300.13.7073.0662.3735.27
3400.13.7573.4762.6936.64
3500.13.8073.8763.0138.02
3600.13.8474.2663.3139.40
3700.13.8974.6463.6240.79
3800.13.9375.0163.9142.18
3900.13.9675.3764.2043.58
4000.14.0075.7364.4844.97
4100.14.0376.0764.7646.38
4200.14.0776.4165.0447.78
4300.14.1076.7465.3049.19
4400.14.1277.0765.5750.60
4500.14.1577.3965.8352.01
4600.14.1877.7066.0853.43
4700.14.2078.0066.3354.85
4800.14.2378.3066.5856.27
4900.14.2578.5966.8257.70
5000.14.2778.8867.0659.12
5100.14.3079.1767.2960.55
5200.14.3279.4467.5261.98
5300.14.3479.7267.7563.41
5400.14.3679.9867.9864.85
5500.14.3880.2568.2066.29
5600.14.4080.5168.4167.73
5700.14.4280.7668.6369.17
5800.14.4481.0168.8470.61
5900.14.4681.2669.0572.06
6000.14.4981.5069.2573.50

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


Copyright for NIST Standard Reference Data is governed by the Standard Reference Data Act.