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beryllium 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
Deltafliquid-129.71kcal/molReviewChase, 1998Data last reviewed in June, 1975
Quantity Value Units Method Reference Comment
liquid,1 bar8.571cal/mol*KReviewChase, 1998Data last reviewed in June, 1975
Quantity Value Units Method Reference Comment
Deltafsolid-145.7 ± 0.60kcal/molReviewCox, Wagman, et al., 1984CODATA Review value
Deltafsolid-145.40kcal/molReviewChase, 1998«alpha» phase; Data last reviewed in June, 1975
Quantity Value Units Method Reference Comment
solid,1 bar3.291 ± 0.01cal/mol*KReviewCox, Wagman, et al., 1984CODATA Review value

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) 2780. - 5000.
A 19.00000
B 1.686860×10-8
C -3.866521×10-9
D 3.049080×10-10
E 2.377920×10-8
F -147.4560
G 15.86600
H -129.7100
ReferenceChase, 1998
Comment Data last reviewed in June, 1975

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. - 800.800. - 2780.298. - 1500.1500. - 2780.
A 0.80281411.248105.90100011.55660
B 31.451291.33804012.562901.049961
C -33.57880-0.118444-8.688430-0.021545
D 13.434400.0130322.2676700.001870
E -0.128267-0.704439-0.251887-0.829136
F -147.1980-150.9750-146.8940-149.6920
G -4.46435013.089106.30015113.94610
H -145.4000-145.4000-143.8000-143.8000
ReferenceChase, 1998Chase, 1998Chase, 1998Chase, 1998
Comment «alpha» phase; Data last reviewed in June, 1975 «alpha» phase; Data last reviewed in June, 1975 «beta» phase; Data last reviewed in June, 1975 «beta» phase; Data last reviewed in June, 1975

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]

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]


Notes

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