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Boric acid


Solid Phase Heat Capacity (Shomate Equation)

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

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. - 1500.
A 9.757161
B 46.66099
C -20.70950
D 3.250980
E -0.219822
F -267.0179
G 18.75030
H -261.4699
ReferenceChase, 1998
Comment Data last reviewed in December, 1964
Temperature
(K)
Cp
(cal/mol*K)

(cal/mol*K)
-(G° - H°298.15)/T
(cal/mol*K)
H° - H°298.15
(kcal/mol)
298.19.4321.1921.21-0.01
300.19.5421.3221.210.03
400.23.9427.5722.032.22
500.27.4433.3023.724.79
600.30.3938.5725.767.69
700.32.9443.4627.9510.86
800.35.1548.0030.1714.26
900.37.0852.2632.3917.88
1000.38.7456.2534.5821.67
1100.40.1760.0136.7225.62
1200.41.3963.5638.8129.70
1300.42.4366.9240.8533.89
1400.43.3070.0942.8238.18
1500.44.0373.1144.7442.54

References

Go To: Top, Solid Phase Heat Capacity (Shomate Equation), 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

Go To: Top, Solid Phase Heat Capacity (Shomate Equation), References