Simplified rpa bhatia-young calculations of the phase diagram for a model binary mixture. i. equal size molecules

We present the results of calculations of the phase diagram for a model binary mixture of equal size hard-core molecules interacting via square-well potentials, but assuming that the system does not satisfy Berthelot rule. In particular, we analyse the effects that the parameter which measures departures from this rule has on the phase diagram of the system. The calculations are based on the Bhatia-Young model for the bulk properties of liquid mixtures.