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barium oxide, obtained by calcining witherite


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
Deltafliquid-491.63kJ/molReviewChase, 1998Data last reviewed in June, 1974
Quantity Value Units Method Reference Comment
liquid,1 bar96.54J/mol*KReviewChase, 1998Data last reviewed in June, 1974
Quantity Value Units Method Reference Comment
Deltafsolid-548.10kJ/molReviewChase, 1998Data last reviewed in June, 1974
Quantity Value Units Method Reference Comment
solid72.05J/mol*KReviewChase, 1998Data last reviewed in June, 1974

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) 2286. - 5000.
A 66.94400
B 0.000002
C -3.301011×10-7
D 1.464401×10-8
E 0.000004
F -525.6580
G 156.3120
H -491.6270
ReferenceChase, 1998
Comment Data last reviewed in June, 1974

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. - 2286.
A 47.42730
B 13.13620
C -3.796501
D 0.725938
E -0.336757
F -563.9310
G 123.7920
H -548.1040
ReferenceChase, 1998
Comment Data last reviewed in June, 1974

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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