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Pentaborane(9)


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
Deltafgas17.50kcal/molReviewChase, 1998Data last reviewed in March, 1965
Quantity Value Units Method Reference Comment
gas,1 bar65.822cal/mol*KReviewChase, 1998Data last reviewed in March, 1965

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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 1500. - 6000.
A 72.19319
B 3.856951
C -0.748996
D 0.050269
E -15.37570
F -39.74720
G 105.0550
H 17.50000
ReferenceChase, 1998
Comment Data last reviewed in March, 1965

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
Deltafliquid10.24kcal/molReviewChase, 1998Data last reviewed in March, 1965
Quantity Value Units Method Reference Comment
liquid,1 bar43.800cal/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 (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. - 700.700. - 1500.
A 424.9199-12.14490
B -1450.350154.7960
C 1971.290-103.3400
D -867.306924.15421
E -9.6614392.213060
F -100.178013.16050
G 856.1439-4.935770
H 10.2400010.24000
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in March, 1965 Data last reviewed in March, 1965

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]


Notes

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