Zur Thermodynamik der Mischungen von n-Alkoholen mit Kohlenwasserstoffen

A method is presented which allows to describe the concentration dependence of the excessGibbs free energyG ^E as well as its variation with temperature in mixtures of n-alcohols with various hydrocarbons. The number of data required is reduced to one experimental point of the excessGibbs free energy for each system. The theoretical treatment is based on the work ofFlory ^{1, 2} and ofRenon andPrausnitz ³. The excess volume due to mixing and association is neglected, but differences in the size of the various species are taken into account. This procedure yields a thermodynamic correlation between the excessGibbs free energy and the enthalpy of mixingH ^E of alcohol-hydrocarbon solutions and results in a comprehensive formalism including nonassociated mixtures.