iron oxide


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
Δfliquid-249.53kJ/molReviewChase, 1998Data last reviewed in June, 1965
Quantity Value Units Method Reference Comment
liquid,1 bar75.40J/mol*KReviewChase, 1998Data last reviewed in June, 1965
Quantity Value Units Method Reference Comment
Δfsolid-272.04kJ/molReviewChase, 1998Data last reviewed in June, 1965
Quantity Value Units Method Reference Comment
solid60.75J/mol*KReviewChase, 1998Data last reviewed in June, 1965

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) 1650. to 5000.
A 68.19920
B -4.501232×10-10
C 1.195227×10-10
D -1.064302×10-11
E -3.092680×10-10
F -281.4326
G 137.8377
H -249.5321
ReferenceChase, 1998
Comment Data last reviewed in June, 1965

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 1650.
A 45.75120
B 18.78553
C -5.952201
D 0.852779
E -0.081265
F -286.7429
G 110.3120
H -272.0441
ReferenceChase, 1998
Comment Data last reviewed in June, 1965

References

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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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