Study of ion-solvent interactions of lithium bromide in, DMSO, H2O and DMSO- H2O mixtures at 25°C

The relative viscosities were measured for LiBr and reference salt Bu4BBPh4, KCl in a wide range composition of mixture of DMSO and water at 25 degrees C to obtain Jones-Dole B-coefficients. The B-coefficients of these electrolytes in DMSO were positive which behave as structure makers while in H2O and DMSO-H2O) mixtures, the B-coefficients values are less positive showing weak structure-making effects. The values of ionic B-coefficients are suggesting that the Li+ ion is structure-maker while Br- is structure-breaking in H2O) and Mix III i.e. 20 % DMSO + 80 % water.