The ternary system water + 1-propanol + urea AT 298.15K. Activity coefficients, partial molal volumes and kirkwood-buff integrals.

摘要: The activity coefficiens, γi, and the partial molal volumes, Vi, of three components ternary system water(1)+1-propanol(2)+urea(3) have been measured at 298.15 K in entire domain full miscibility. These data used to calculate six Kirkwood-Buff (K-B) integrals, Gij, mixture. γ1 γ2 are found very little dependent on urea mole fraction x3. indicating scarce influence interaction free energy between water propanol. V1 V2 too concentration; shows a characteristic minimum dilute alcohol solution even high x3 values. increase V3 with x3, hydrophilic compounds water, is x2. observed homologous Gii's G12 decrease G23 addition indicate that this compound brings about an enhanced homocoordination components, as well urea-water affinity, suggest G22 may be due abduction molecules from solvation sphere