ION-SOLVENT INTERACTIONS - CONDUCTANCE STUDIES OF TETRAALKYL-AMMONIUMIONS IN ETHANOL PLUS WATER MIXTURES

In order to understand the nature of ion-solvent interactions and stru ctural changes of the solvent mixtures associated with the addition of ions, conductance measurements of the tetraalkylammonium halides in e thanol + water mixtures were made, The results have been analysed usin g the Fuoss equations. In absence of transference number values, the s ingle ion values of tetraalkylammonium ions at 16.4, 34.4, 54.1 and 76 wt% of ethanol haye been calculated using reference electrolyte metho d taking Bu4NBPh4 as the electrolyte. The variation of LAMBDA0 and LAM BDA0eta0 or LAMBDA o +/- eta0 with solvent composition has been interp reted in terms of structural changes associated with the addition of e lectrolytes. Most of the electrolytes can be regarded to be associated in the solvent mixtures.