Abstract
Abstract The electrolytic conductance of LiClO4 has been determined in N,N-dimethylformamide (DMF) and its binary mixtures with acetone (Ac) and ethyl methyl ketone (MEK) at 25 °C. Ion association constants (KA) and limiting molar conductance (Λ0) were calculated from these data using Fuoss equation with modifications. The KA values of LiClO4 in these binary mixtures are interpreted in terms of solvent separated ion pairs while in pure Ac and MEK almost contact ion pairs are expected. A comparison is made for Λ0 and KA values of this salt in Ac and Ac–DMF mixtures with those obtained by Gill et al. Further, a comparison is made between these results and spectroscopically derived results by others in analogous media. LiClO4 has been found more associated in Ac–DMF solvent system than in the MEK–DMF mixed solvent system.
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