A generalized technique on the estimation of entropy of mixing of liquid Cs -Pb alloy

In this article the author proposes an alternative theory for computing the entropy of mixing for structurally inhomogeneous binary liquid alloys composed of alkali metals and group-IV elements and successfully applies this theoretical model to liquid Cs–Pb alloy. These alloys in the liquid state exhibit Chemical Short-Range Ordering (CSRO) and a tendency to form compounds. Here the binary alloy has been supposed as a system consisting of charged hard spheres where partial charge transfer occurs depending upon the difference of electro-negativities between the two constituent atoms. The model is generalized, being formulated for hard spheres of arbitrary sizes and charges. It is applied here to calculate the entropy of mixing of liquid Cs–Pb alloy, and the theoretical results agree satisfactorily with experimental data.