Interactions in Aqueous Solutions of Hydrophilic Urea Derivatives and NaI at the Temperatures 293.15 and 303.15 K

Abstract

Measurements were made of the enthalpies of solution of NaI in water and in aqueous 0.1, 0.7, 1.0 and 1.5 mol ureas kg H₂O solutions of thiourea (TU) or hydroxyurea (HU) at the temperatures 293.15 and 303.15 K. Taking advantage of the standard values of solution enthalpy of electrolytes in water and in aqueous solutions of thiourea and hydroxyurea, the enthalpic pair interaction coefficients of uruas molecule-averaged ion were determined [l, 2],