| Abstract: | It is shown that the Gibbs vaporization potential  G* is additive with respect to molecular groups at all temperatures and it most completely characterizes the intermolecular interactions. The excess entropy of vaporization is identical for all spherical molecules ( 30 J/mole·K and does not depend on the size of the molecule or the temperature. In long-chain molecules it is additive with respect to the number of links in the chain, varies with temperature, and is equal to the difference between the heat capacities of the gas and liquid and exceeds 30 J/mole·K.Leningrad State Scientific Institute of Industrial Chemistry. Translated from Teoreticheskaya i Éksperimental'naya Khimiya, No. 1, pp. 66–70, January–February, 1991. Original article submitted April 27, 1988. |
