EFFECT OF NONELECTROLYTE PROPERTIES ON UREA - NONELECTROLYTE ENTHALPIC INTERACTION COEFFICIENTS IN WATER - DISSOLUTION ENTHALPIES OF UREA IN AQUEOUS-SOLUTIONS OF DIMETHYL-SULFOXIDE AND 1,2-DIMETHOXYETHANE AT 298.15-K

Dissolution enthalpies of urea in aqueous solutions of dimethyl sulfoxide and 1,2-dimethoxyethane have been measured and appropriate enthalpic pair interaction coefficients h(xy) (urea - non-electrolyte) in water have been determined. These results, in connection with the other data concerning urea - non-electrolyte pairs taken from our earlier reports and from the literature, were analysed with respect to the effect of the non-electrolyte properties (polarity, acidity and basicity) on variations of the h(xy) values in water. The h(xy) values were also correlated with the multiparameter equation of the Abraham-Kamlet-Taft type.