Order effects in the excess thermodynamic properties of benzene + alkane mixtures

Abstract

Mixtures of benzene and an alkane have been analysed using the method of Patterson. Order contributions in pure benzene, pure n-alkane and benzene + n-alkane mixtures and sterichindrance effects in some benzene + branched-alkane mixtures are able to explain qualitatively the excess thermodynamic properties of these systems. Order contributions are studied in terms of the model of Heintz and Lichtenthaler. It is shown how the value of X₁₂ obtained from H^E data may be predicted from the value of X₁₂ obtained from G^E data for a system without order contributions.