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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 - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Deltafgas44.32 ± 0.21kcal/molCcbWagman, Kilpatrick, et al., 1945Unpublished work of E. J. Prosen; ALS

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
7.97650.Thermodynamics Research Center, 1997p=1 bar. Recommended values are in good agreement with other statistically calculated values [ Wagman D.D., 1945, Daykin P.N., 1962].; GT
8.769100.
10.14150.
11.61200.
13.78273.15
14.51298.15
14.57300.
17.34400.
19.74500.
21.80600.
23.59700.
25.148800.
26.520900.
27.7271000.
28.7831100.
29.7111200.
30.5211300.
31.2311400.
31.8551500.

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
13.76272.28Kistiakowsky G.B., 1940Other experimental values of heat capacity [ Kistiakowsky G.B., 1940, 2] were measured with large uncertainties.; GT
14.58299.59
15.56332.83
16.52369.21

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.

Wagman, Kilpatrick, et al., 1945
Wagman, D.D.; Kilpatrick, J.E.; Pitzer, K.S.; Rossini, F.D., Heats, equilibrium constants, and free energies of formation of the acetylene hydrocarbons through the pentynes, to 1,500° K, J. Res. NBS, 1945, 35, 467-496. [all data]

Thermodynamics Research Center, 1997
Thermodynamics Research Center, Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]

Wagman D.D., 1945
Wagman D.D., Heats, equilibrium constants, and free energies of formation of the acetylene hydrocarbons through the pentynes to 1500 K, J. Res. Nat. Bur. Stand., 1945, 35, 467-496. [all data]

Daykin P.N., 1962
Daykin P.N., Potential energy constants, rotational distortion constants, and thermodynamic properties of methylacetylenes, J. Chem. Phys., 1962, 37, 1087-1094. [all data]

Kistiakowsky G.B., 1940
Kistiakowsky G.B., Gaseous heat capacities. II, J. Chem. Phys., 1940, 8, 610-618. [all data]

Kistiakowsky G.B., 1940, 2
Kistiakowsky G.B., The low temperature gaseous heat capacities of certain C3 hydrocarbons, J. Chem. Phys., 1940, 8, 970-977. [all data]


Notes

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