Donald J. Mintz

Liquid-liquid solubility and critical phenomena in binary mixtures

Abstract By assuming a proportionality exists between a difference in Boltzmann factors and a difference in compositions, the following expression is developed for the mole fraction order parameter in symmetric binary liquid mixtures Δx = [1 − exp E RT c (l−T c /T)] β In the critical limit this expression reduces to the form for simple scaling fx253-fig 1 By treating the original components A and B as if they transfer between the phases in the form of aggregates with the empirical formulas AmB1−m and Bn, in which 0 0, coexistence curves in diverse systems become symmetric and are fitted by the above expressions. Beta exponent values obtained from these fits range in value from 0.312±0.002 to 0.333±0.003.