Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

boron


Gas phase thermochemistry data

Go To: Top, 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
Deltafgas135. ± 1.kcal/molReviewCox, Wagman, et al., 1984CODATA Review value
Deltafgas133.84kcal/molReviewChase, 1998Data last reviewed in June, 1983
Quantity Value Units Method Reference Comment
gas,1 bar36.6721 ± 0.0036cal/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar36.673cal/mol*KReviewChase, 1998Data last reviewed in June, 1983

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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 4137.895 - 6000.
A 4.935930
B 0.054117
C -0.026847
D 0.004037
E 0.002083
F 132.3770
G 42.64290
H 133.8430
ReferenceChase, 1998
Comment Data last reviewed in June, 1983

References

Go To: Top, Gas phase thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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]

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

Go To: Top, Gas phase thermochemistry data, References