The thermodynamic properties of fluorocarbon+hydrocarbon mixtures 2. Excess enthalpies of mixing

Abstract

The enthalpy of mixing of hexafluorobenzene with a series of alicyclic and aromatic hydrocarbons has been measured as a function of temperature and, in many cases, over the whole range of compositions. The excess heat capacity of the mixtures has been calculated for equimolar mixtures. The results indicate that it is the shape of the hydrocarbon that is the predominant factor governing the magnitude of the excess functions and that π-π interactions play a secondary role in this respect.