Asymptotic expressions for the solutendash;solute pair correlation integral and for the limiting slope of the composition dependence of the solutersquo;s activity coefficient are derived for the situation in which the solventrsquo;s critical point is approached while the mixture is kept at infinite dilution. Both quantities diverge to plus infinity and scale as the solventrsquo;s compressibility, with prefactors that depend on the temperature, solvent density, and the infinite dilution limit of the solutendash;solvent direct correlation function integral.
展开▼
