Thermodynamics of methylcyclohexane + toluene and methylcyclohexane + cyclohexane mixtures from isothermal compressibility data

Abstract

Measurements of isothermal compressibility, κ_T, have been carried out for methylcyclohexane + toluene mixtures at 298.15, 318.15, 318.15 and 333.15 K. The results were combined with data for other parameters to obtain isentropic compressibilities and heat capacities at constant volume. The corresponding excess functions κ^E_T, κ^E_s and C^E_v have also been calculated and their behaviour as a function of the mole fraction and temperature studied. The Prigogine-Flory theory of mixtures, using two different potentials, has been checked from our isothermal compressibility measurements.