lon-Solvent Interactions : Conductance Studies of Tetraalkylammonium Ions in Ethanol+ Water Mixtures

United Bank of India, 507 R. B. C. Road, Garifa, North 24-Parganas Department of Chemistry, University of Kalyani, Kalyani-741 235 Department of Chemistry, Vivekananda Mission Mahavidyalaya, Viveknagar, P.O. Chaitanyapur (Haldia)-721 645 Manuscript received 9 June 1992, revised 22 October 1992, accepted 2 December 1992 ln order to understand the nature of ion-solvent interactions and structural changes of the solvent mixtures associated with the addition of ions, conductance measurements of the tetraalkylammonium halides in ethanol + water mixtures were made. The results have been analysed using the Fuoss equations. In absence of transference number values, the single ion values of tetraalkylammonium ions at 16.4, 34.4, 54.1 and 76 wt% of ethanol have been calculated using reference electrolyte method taking Bu4NBPh4 as the electrolyte. The variation of \(\Lambda\)o and \(\Lambda\)oηo or \(\Lambda\)o±ηo With solvent composition has been interpreted in terms of structural changes associated with the addition of electrolytes. Most of the electrolytes can be regarded to be associated in the solvent mixtures