LAW OF CORRESPONDING STATES OF UNIUNIVALENT MOLTEN-SALT MIXTURES .1. MIXING RULE OF PAIR POTENTIAL PARAMETERS

A mixing rule for the pair potential parameters of molten alkali halide mixtures was obtained. The pair potential between the ions was simplified to soft-sphere and effective Coulomb potentials. The characteristic potential parameters of the mixtures were selected such that the Helmholtz energy of the mixture was equal to that of a hypothetical reference system. Molar volume and surface tension of the mixtures were correlated in a corresponding states correlation using the characteristic parameters. It was also discussed how the mixing volume and surface tension were described by using the characteristic parameters. © 1990, American Chemical Society. All rights reserved.