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boron carbide


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
Deltafliquid51.88kJ/molReviewChase, 1998Data last reviewed in June, 1983
Quantity Value Units Method Reference Comment
liquid,1 bar69.21J/mol*KReviewChase, 1998Data last reviewed in June, 1983
Quantity Value Units Method Reference Comment
Deltafsolid-62.68kJ/molReviewChase, 1998Data last reviewed in June, 1983
Quantity Value Units Method Reference Comment
solid26.77J/mol*KReviewChase, 1998Data last reviewed in June, 1983

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) 2743. - 4500.
A 290.0855
B -102.4653
C 24.80643
D -2.078533
E -126.5811
F -249.7107
G 210.1184
H 51.88495
ReferenceChase, 1998
Comment Data last reviewed in June, 1983

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. - 2743.
A 95.99853
B 23.16513
C -0.409604
D 0.081414
E -4.395208
F -107.1995
G 111.3329
H -62.67590
ReferenceChase, 1998
Comment Data last reviewed in June, 1983

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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