Ionic Interaction of MgSO4 with Mixed Organic Solvents

Abstract

Densities and viscosities (η) of MgSO₄ in formamide and   ethylene glycol mixed solvents were measured at three different   temperatures. The data was analyzed on the basis of Jones-   Dole equation. Positive and increasing values of the B-coefficients   show strong solute-solvent or ion-solvent interaction   in the given mixed solvent system. Therefore, it may be concluded   that the MgSO₄ behaves as structure former or which   enhances the structure of 48.32 % mole fraction of formamide   + ethylene glycol solvent mixture. This study may be found   true in measuring the transition state parameters. The values   of free energy of activation of viscous flow of solution ΔU₂º   are greater than the values of free energy of activation of viscous   flow of solvent system ΔU₁º, which attributes that electrolyte   i.e. magnesium sulphate is a structure enhancer or maker of   the solvent system used in this study. Statistical calculations   were also calculated as a function of salt's concentration and   temperatures.