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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-117.50kcal/molReviewChase, 1998Data last reviewed in June, 1974
Quantity Value Units Method Reference Comment
liquid,1 bar23.07cal/mol*KReviewChase, 1998Data last reviewed in June, 1974
Quantity Value Units Method Reference Comment
Deltafsolid-131.00kcal/molReviewChase, 1998Data last reviewed in June, 1974
Quantity Value Units Method Reference Comment
solid17.22cal/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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 2286. - 5000.
A 16.00000
B 4.686783×10-7
C -7.889604×10-8
D 3.500001×10-9
E 8.576028×10-7
F -125.6353
G 37.35947
H -117.5017
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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 2286.
A 11.33540
B 3.139628
C -0.907385
D 0.173503
E -0.080487
F -134.7827
G 29.58700
H -131.0000
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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