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lead difluoride

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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) 1500. - 6000.
A 57.28482
B 0.779768
C -0.210946
D 0.017981
E -0.595576
F -454.2443
G 358.4098
H -435.1360
ReferenceChase, 1998
Comment Data last reviewed in December, 1973
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
1500.57.78382.7337.567.88
1600.57.83386.5340.473.66
1700.57.88390.0343.279.45
1800.57.93393.3345.985.24
1900.57.96396.4348.591.03
2000.58.00399.4351.096.83
2100.58.02402.2353.3102.6
2200.58.05404.9355.6108.4
2300.58.07407.5357.8114.2
2400.58.09410.0359.9120.0
2500.58.10412.3362.0125.9
2600.58.11414.6364.0131.7
2700.58.12416.8365.9137.5
2800.58.13418.9367.7143.3
2900.58.14421.0369.5149.1
3000.58.14422.9371.3154.9
3100.58.15424.8373.0160.7
3200.58.15426.7374.6166.5
3300.58.15428.5376.2172.4
3400.58.15430.2377.8178.2
3500.58.15431.9379.3184.0
3600.58.15433.5380.8189.8
3700.58.15435.1382.3195.6
3800.58.15436.7383.7201.4
3900.58.14438.2385.0207.3
4000.58.14439.7386.4213.1
4100.58.14441.1387.7218.9
4200.58.14442.5389.0224.7
4300.58.13443.9390.3230.5
4400.58.13445.2391.5236.3
4500.58.13446.5392.7242.1
4600.58.13447.8393.9247.9
4700.58.13449.0395.0253.8
4800.58.13450.3396.2259.6
4900.58.13451.5397.3265.4
5000.58.13452.6398.4271.2
5100.58.14453.8399.5277.0
5200.58.14454.9400.5282.8
5300.58.15456.0401.6288.6
5400.58.16457.1402.6294.5
5500.58.16458.2403.6300.3
5600.58.17459.2404.6306.1
5700.58.19460.2405.5311.9
5800.58.20461.3406.5317.7
5900.58.22462.3407.4323.6
6000.58.24463.2408.3329.4

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