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dipotassium tetraborate


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-3289.05kJ/molReviewChase, 1998Data last reviewed in March, 1965
Quantity Value Units Method Reference Comment
liquid,1 bar236.89J/mol*KReviewChase, 1998Data last reviewed in March, 1965
Quantity Value Units Method Reference Comment
Deltafsolid-3334.23kJ/molReviewChase, 1998Data last reviewed in March, 1965
Quantity Value Units Method Reference Comment
solid208.34J/mol*KReviewChase, 1998Data last reviewed in March, 1965

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) 1088. - 3000.
A 350.4908
B 179.0961
C -54.02674
D 5.634467
E -36.89614
F -3531.434
G 403.1661
H -3289.047
ReferenceChase, 1998
Comment Data last reviewed in March, 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. - 900.900. - 1088.
A -47.33568187.5616
B 974.3657137.0415
C -1042.561-41.23826
D 399.6256-0.072825
E 0.840181-0.035162
F -3352.204-3403.240
G -91.92206377.4445
H -3334.234-3334.234
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in March, 1965 Data last reviewed in March, 1965

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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