Ion solvation in methanol—organic cosolvent mixtures Part 5. Enthalpies of transfer of inorganic ions in mixtures of methanol and propylene carbonate at 298.15 K

Abstract

The enthalpies of solution of NaBr, NaI and NaClO 4 in methanol + propylene carbonate mixtures were measured at 298.15 K. From these data, together with literature data that refer to ( n-Bu) 4NBr, ( n-Bu) 4NB( n-Bu) 4 and ( n-Bu) 4NClO 4 the enthalpies of transfer of the individual ions Na +, Br −, I −, ClO − 4 and ( n-Bu) 4N +, from methanol to methanol + propylene carbonate mixtures were calculated employing the assumption Δ tr H ∞( n-Bu) 4N + = Δ tr H ∞B( n-Bu) − 4. The dependences of the single-ion transfer enthalpies on the mixed solvent composition are discussed.