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Condensed phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Δfliquid46.21kJ/molReviewChase, 1998Data last reviewed in March, 1979
Quantity Value Units Method Reference Comment
liquid,1 bar71.94J/mol*KReviewChase, 1998Data last reviewed in March, 1979

Liquid Phase Heat Capacity (Shomate Equation)

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) 2500. to 4963.793
A 37.65604
B -1.195850×10-7
C 2.633457×10-8
D -1.977226×10-9
E -1.780309×10-7
F 15.45084
G 90.56477
H 46.20893
ReferenceChase, 1998
Comment Data last reviewed in March, 1979

Solid Phase Heat Capacity (Shomate Equation)

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 2500.298. to 2500.
A 22.7103314.99366
B 10.864439.234131
C -1.901809-0.000539
D 0.3063680.000106
E -0.0075870.000024
F -7.26430313.82318
G 67.8435676.50360
H 0.00000018.68604
ReferenceChase, 1998Chase, 1998
Comment α phase; Data last reviewed in March, 1979 β phase; Data last reviewed in March, 1979

References

Go To: Top, Condensed phase thermochemistry data, 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

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