Topological investigations of excess molar volumes and excess isentropic compressibilities of ternary mixtures containing 1-methyl pyrrolidin-2-one at 308.15 K

Abstract

Excess molar volumes and speeds of sound, of 1-methyl pyrrolidin-2-one ( i) + benzene or methyl benzene or cyclohexane ( j) + propan-1-ol ( k) ternary mixtures have been measured as a function of composition at 308.15 K using dilatometer and interferometer. The observed speeds of sound data have been utilized to calculate excess isentropic compressibilities of the studied mixtures. The observed excess molar volumes and excess isentropic compressibility values have been fitted to the Redlich–Kister equation to predict ternary adjustable parameters and standard deviations. The resulting data have also been analyzed in terms of Graph theory and Flory–Prigogine–Patterson theory. It has been observed that excess molar volumes and excess isentropic compressibility values determined by the Graph theory compare well with their corresponding experimental values.