正规溶解度的近似式

THE APPROXIMATE FORMULA OF REGULAR SOLUBILITY

本文主要是根据热力学的基本关系式导得了正规溶解度的近似式(12式),从而也就使 Hildebrand 等人提出的经验规则获得了理性说明,并通过实际计算检验了(12式)的正确程度。

In 1962,Hildebrand and Scott according to experiments have sum- marily proposed:“The fact is that a plot of log x_2 vs.log T gives absolutely straight lines in the region where x_2<0.1”.In orther words, the experiences shows that for the solubility x_2 of regular solution of which the solute is in the solid or gaseous state,that is to say,is t- he regular solubility,a plot of log x_2 vs.log T has a liner relation within x_2<0.1.This rule can be called the empirical rule of regular solubility.This arcticle mainly derived an approximate formula(12) of regular solubility according to the basic equations of thermodynam- ics,and therefore for the empirical ruel atheoretical explanation has been obtained,and the exactitude of formula(12)has been examined by practically calculating.