CONSISTENT CONTACT PAIR CORRELATION-FUNCTIONS AND EQUATIONS OF STATE FOR HARD-SPHERE MIXTURE

General consistent equations for the contact values of the pair correl ation functions of mixture of hard spheres are obtained using a recent ly proposed exact equation relating the mixture pair correlation integ rals. Specific expressions are obtained when the general equations are combined with pure hard-sphere equations of state. The mixture equati ons reduce to the appropriate pure values for all the limiting values of the composition and the collision diameters. Consistent mixture equ ations are derived based on the Carnahan-Starling and the Kolafa pure equations of state. The resulting equations agree well with the exact mixture fourth virial coefficient and the compressibility factor simul ation data. (C) 1995 American Institute of Physics.