Molar excess volumes of ternary mixtures containing ether

Abstract

Molar excess volumes (VEijk) of 1,3-dioxolane (i) + benzene (j) + cyclohexane (k); 1,3-dioxolane (i) + benzene (j) + n-hexane (k); and 1,3-dioxolane (i) + benzene (j) + n-heptane (k) ternary mixtures have been measured dilatometrically as a function of composition at 298.15 K. The observed data have been analysed in terms of (i) Graph theoretical approach; (ii) Flory's theory; and (iii) Lacombe and Sanche's theory of liquid mixtures. It has been observed that VEijk values predicted by graph theoretical approach compare better with the corresponding experimental values than with the VEijk data predicted by other approaches.Key words: molar excess volumes, molar volume interaction parameters, connectivity parameter of third degree 3ξ.