diboron trioxide

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Gas 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
Δfgas-835.96kJ/molReviewChase, 1998Data last reviewed in June, 1971
Quantity Value Units Method Reference Comment
gas,1 bar283.77J/mol*KReviewChase, 1998Data last reviewed in June, 1971

Gas 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) 3000. to 6000.
A 103.9017
B 2.228369
C -0.434734
D 0.029271
E -10.42071
F -891.5351
G 376.0328
H -835.9632
ReferenceChase, 1998
Comment Data last reviewed in June, 1971

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, References, Notes

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-1253.36kJ/molReviewChase, 1998Data last reviewed in June, 1971
Quantity Value Units Method Reference Comment
liquid,1 bar78.45J/mol*KReviewChase, 1998Data last reviewed in June, 1971
Quantity Value Units Method Reference Comment
Δfsolid-1273.5 ± 1.4kJ/molReviewCox, Wagman, et al., 1984CODATA Review value
Δfsolid-1271.94kJ/molReviewChase, 1998Data last reviewed in June, 1971
Quantity Value Units Method Reference Comment
solid,1 bar53.97 ± 0.30J/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
Quantity Value Units Method Reference Comment
solid53.95J/mol*KReviewChase, 1998Data last reviewed in June, 1971

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) 723. to 3000.
A 111.5690
B 23.17410
C -10.32210
D 1.533191
E 3.539531
F -1290.900
G 188.0810
H -1253.360
ReferenceChase, 1998
Comment Data last reviewed in June, 1971

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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View table.

Temperature (K) 298. to 723.
A 5.431501
B 272.5617
C -252.4956
D 97.65540
E -0.377274
F -1284.902
G -12.50564
H -1271.936
ReferenceChase, 1998
Comment Data last reviewed in June, 1971

References

Go To: Top, Gas phase thermochemistry data, 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

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References