Abstract
A short discussion of the nature of distribution equilibria between mixed crystals and aqueous solutions is given. From the general theory of the thermodynamical potential and the activity theory of strong electrolytes, equations are deduced giving the influence of the composition of the liquid phase on the distribution ratio and the dependence of the partition constant on the properties of the pure components. The relative importance of the various factors in these equations, depending on the concentrations and properties of the components, is discussed. The deduced equations are in agreement with the experimental data.