Phosphorus dimer


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. - 6000.
A 8.585560
B 0.354638
C -0.081217
D 0.006912
E -0.096061
F 31.43480
G 61.86800
H 34.33389
ReferenceChase, 1998
Comment Data last reviewed in June, 1961
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
298.7.6052.1252.13-0.00
300.7.6252.1752.130.01
400.8.1154.4452.430.80
500.8.3656.2853.021.63
600.8.5057.8153.702.47
700.8.6059.1354.383.33
800.8.6760.2955.054.19
900.8.7361.3155.695.06
1000.8.7762.2356.305.93
1100.8.8163.0756.886.81
1200.8.8463.8457.427.70
1300.8.8764.5557.958.58
1400.8.8965.2058.449.47
1500.8.9265.8258.9110.36
1600.8.9466.3959.3611.25
1700.8.9566.9459.7912.15
1800.8.9767.4560.2013.04
1900.8.9967.9360.6013.94
2000.9.0068.4060.9814.84
2100.9.0168.8461.3415.74
2200.9.0369.2661.6916.64
2300.9.0469.6662.0317.55
2400.9.0570.0462.3518.45
2500.9.0670.4162.6719.36
2600.9.0770.7762.9720.26
2700.9.0771.1163.2721.17
2800.9.0871.4463.5522.08
2900.9.0971.7663.8322.99
3000.9.0972.0764.1023.89
3100.9.1072.3664.3624.80
3200.9.1172.6564.6225.71
3300.9.1172.9364.8726.63
3400.9.1273.2165.1127.54
3500.9.1273.4765.3428.45
3600.9.1273.7365.5729.36
3700.9.1373.9865.8030.27
3800.9.1374.2266.0131.19
3900.9.1474.4666.2332.10
4000.9.1474.6966.4433.01
4100.9.1474.9266.6433.93
4200.9.1575.1466.8434.84
4300.9.1575.3567.0435.76
4400.9.1675.5667.2336.67
4500.9.1675.7767.4137.59
4600.9.1775.9767.6038.51
4700.9.1776.1767.7839.42
4800.9.1876.3667.9540.34
4900.9.1876.5568.1341.26
5000.9.1976.7368.3042.18
5100.9.1976.9268.4743.10
5200.9.2077.0968.6344.02
5300.9.2177.2768.7944.94
5400.9.2277.4468.9545.86
5500.9.2377.6169.1146.78
5600.9.2477.7869.2647.70
5700.9.2577.9469.4148.63
5800.9.2678.1069.5649.55
5900.9.2778.2669.7050.48
6000.9.2878.4269.8551.41

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