Studies in regular solution theory. Part 2.—Entropy of solution of tetraphenyltin in simple non-polar solvents

Abstract

The partial molal volume of tetraphenyltin in some non-polar organic solvents has been measured using a dilatometer method. The values obtained have been used to compare the entropy of solution at constant volume with that at constant pressure. Within the bounds of regular solution theory the usual Flory-Huggins term is inadequate. The formulation of an alternative, which provides good agreement with the experimental data and the expected pattern of behaviour, is discussed.