The Heat Capacity of Benzene Vapor. The Contribution of Anharmonicity
- 1 August 1947
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 15 (8), 565-568
- https://doi.org/10.1063/1.1746597
Abstract
The heat capacity of benzene vapor was measured at two or more pressures at each of five temperatures in the range 68° to 198°C; and values of Cpo, the heat capacity in the ideal gas state, were obtained. By assuming a moderate degree of anharmonicity of the vibrations, it was possible to obtain excellent agreement between values of Cpo calculated statistically from spectroscopic data, and the observed values. An empirical equation for the second virial coefficient of benzene vapor was obtained from the observed values of (∂Cp/∂P)T, and heat of vaporization and vapor pressure data.Keywords
This publication has 7 references indexed in Scilit:
- An Improved Flow Calorimeter. Experimental Vapor Heat Capacities and Heats of Vaporization of n-Heptane and 2,2,3-Trimethylbutane1Journal of the American Chemical Society, 1947
- Heats, free energies, and equilibrium constants of some reactions involving O2, H2, H2O, C, CO, CO2, and CH4Journal of Research of the National Bureau of Standards, 1945
- The Thermodynamic Properties of Gaseous Sulfur TrioxideThe Journal of Chemical Physics, 1944
- The Heat Capacity of Organic Vapors. IV. Benzene, Fluorobenzene, Toluene, Cyclohexane, Methylcyclohexane and CyclohexaneJournal of the American Chemical Society, 1942
- Second Virial Coefficients and the Forces Between Complex MoleculesThe Journal of Chemical Physics, 1942
- Calorimetric determinations of thermal properties of methyl alcohol, ethyl alcohol, and benzeneBureau of Standards Journal of Research, 1931
- Eine Methode der Dampfdichtemessung zur Bestimmung von AtomgewichtenZeitschrift für anorganische und allgemeine Chemie, 1921