Phosphorus difluoride


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) 298. to 600.600. to 6000.
A 18.7557057.15135
B 127.12210.920618
C -163.9764-0.308527
D 78.378040.037799
E 0.049703-1.651899
F -498.0383-510.4438
G 254.6282323.7726
H -488.2561-488.2561
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1977 Data last reviewed in June, 1977
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
298.44.71262.9263.0-0.01
300.44.80263.2263.00.08
400.48.70276.7264.84.77
500.51.32287.9268.39.78
600.53.07297.4272.415.00
Temperature
(K)
Cp
(J/mol*K)

(J/mol*K)
-(G° - H°298.15)/T
(J/mol*K)
H° - H°298.15
(kJ/mol)
600.53.01297.4272.415.00
700.54.29305.6276.520.37
800.55.13313.0280.625.84
900.55.72319.5284.631.39
1000.56.15325.4288.436.98
1100.56.48330.7292.042.61
1200.56.73335.7295.448.28
1300.56.93340.2298.753.96
1400.57.10344.4301.859.66
1500.57.23348.4304.865.38
1600.57.34352.1307.671.11
1700.57.44355.6310.476.85
1800.57.52358.9313.082.59
1900.57.59362.0315.588.35
2000.57.65364.9317.994.11
2100.57.70367.7320.299.88
2200.57.74370.4322.4105.7
2300.57.78373.0324.5111.4
2400.57.82375.4326.6117.2
2500.57.85377.8328.6123.0
2600.57.88380.1330.5128.8
2700.57.91382.3332.4134.6
2800.57.93384.4334.2140.4
2900.57.95386.4336.0146.2
3000.57.97388.4337.7151.9
3100.57.99390.3339.4157.7
3200.58.02392.1341.0163.5
3300.58.04393.9342.6169.3
3400.58.06395.6344.1175.2
3500.58.08397.3345.6181.0
3600.58.10398.9347.1186.8
3700.58.13400.5348.5192.6
3800.58.15402.1349.9198.4
3900.58.18403.6351.2204.2
4000.58.21405.1352.6210.0
4100.58.25406.5353.9215.9
4200.58.28407.9355.1221.7
4300.58.32409.3356.4227.5
4400.58.36410.6357.6233.3
4500.58.41411.9358.8239.2
4600.58.46413.2360.0245.0
4700.58.51414.5361.1250.9
4800.58.57415.7362.2256.7
4900.58.63416.9363.3262.6
5000.58.70418.1364.4268.5
5100.58.77419.3365.5274.3
5200.58.85420.4366.5280.2
5300.58.93421.5367.6286.1
5400.59.02422.6368.6292.0
5500.59.12423.7369.6297.9
5600.59.22424.8370.5303.8
5700.59.32425.8371.5309.7
5800.59.44426.9372.4315.7
5900.59.56427.9373.4321.6
6000.59.69428.9374.3327.6

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