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Dichlorodifluoromethane

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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.

Data compiled as indicated in comments:
ALS - H.Y. Afeefy, J.F. Liebman, and S.E. Stein

Quantity Value Units Method Reference Comment
Deltafgas-491.62kJ/molReviewChase, 1998Data last reviewed in June, 1970
Deltafgas-477.6 ± 5.6kJ/molCmKolesov, Zenkov, et al., 1963Reanalyzed by Cox and Pilcher, 1970, Original value = -469.0 ± 5.0 kJ/mol; Reaction with Na; ALS
Deltafgas-477. ± 13.kJ/molCcbWartenberg and Schiefer, 1955Reanalyzed by Cox and Pilcher, 1970, Original value = -473. kJ/mol; ALS
Deltafgas-469. ± 8.kJ/molCmKirkbride and Davidson, 1954Von Wartenberg method; ALS
Quantity Value Units Method Reference Comment
gas,1 bar300.89J/mol*KReviewChase, 1998Data last reviewed in June, 1970

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 (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. - 1100.1100. - 6000.
A 48.01014107.3635
B 139.18080.404844
C -124.3326-0.082033
D 39.751470.005689
E -0.633834-5.707394
F -513.2304-539.7486
G 319.1028406.4660
H -491.6200-491.6200
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1970 Data last reviewed in June, 1970

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.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Kolesov, Zenkov, et al., 1963
Kolesov, V.P.; Zenkov, I.D.; Skuratov, S.M., Standard enthalpies of formation of chlorotrifluoromethane and dichlorodifluoromethane, Russ. J. Phys. Chem. (Engl. Transl.), 1963, 37, 378-379. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Wartenberg and Schiefer, 1955
Wartenberg, H.V.; Schiefer, J., Bildungswarmen von fluor-chlor-kohlenstoff-verbindungen, Z. Anorg. Chem., 1955, 278, 326-332. [all data]

Kirkbride and Davidson, 1954
Kirkbride, F.W.; Davidson, F.G., Heats of formation of gaseous fluoro- and fluorochloro-carbons, Nature (London), 1954, 174, 79-80. [all data]


Notes

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