Prediction of excess enthalpies for ternary aqueous solutions of nonelectrolytes

The excess enthalpies HxyE of ternary aqueous solutions of nonelectrolytes are used to test the possibility of making predictions for ternary solutions from the properties of the binary solutions only. Two methods are proposed: one is based on the empirical rule (hxx ·hyy )1/2=hxy . Another leads to the numerical prediction of the overall HxyE . Both are successful for most of the pairs of solutes for which HxE, HyE >0. © 1980 Plenum Publishing Corporation