PHASE-STABILITY OF A SIMPLE FLUID MODEL MIXTURE

The dependence on the interparticle potential of the spinodal line of a model binary mixture of simple fluids is studied making use of the hypernetted-chain equation. The behavior of the isothermal and osmotic compressibilities in the approach to the unstable region is also investigated. According to the results the mixture can exhibit a liquid-gas as well as a consolute phase transition.