Hematite (Fe2O3)


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
Δfsolid-825.50kJ/molReviewChase, 1998hematite phase; 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 950.950. to 1050.1050. to 2500.
A 93.43834150.6240110.9362
B 108.35770.00000032.04714
C -50.864470.000000-9.192333
D 25.586830.0000000.901506
E -1.6113300.0000005.433677
F -863.2094-875.6066-843.1471
G 161.0719252.8814228.3548
H -825.5032-825.5032-825.5032
ReferenceChase, 1998Chase, 1998Chase, 1998
Comment hematite phase; Data last reviewed in June, 1965 hematite phase; Data last reviewed in June, 1965 hematite phase; 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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