MEASUREMENTS AND ANALYSIS OF EXCESS VOLUMES OF SOME ALKAN-2-ONE-1-CHLOROALKANE MIXTURES USING NITTA-CHAO AND PRIGOGINE-FLORY-PATTERSON MODELS

Excess molar volumes v(E) at 298.15 and 308.15 K and normal atmospheri c pressure for the binary mixtures butan-2-one-1-chloroalkane (from 1- chlorobutane to 1-chlorooctane) have been determined from density meas urements using a vibrating tube densimeter. The v(E) values for all th e mixtures are positive, increase as the 1-chloroalkane length increas es, and are slightly dependent on the temperature. Experimental v(E) d ata are compared with theoretical predictions using the Prigogine-Flor y-Patterson model with interaction parameters calculated from excess m olar enthalpies measured previously in the same mixtures. These v(E) v alues, together with literature data on excess molar enthalpies and va pour-liquid equilibria, are then used to determine the interaction ene rgies between chloro and ketone groups on the basis of the Nitta-Chao group-contribution model. These parameters may be used to predict ther modynamical properties of binary or ternary mixtures containing ketone s and chloroalkanes.