Collect. Czech. Chem. Commun.
1991, 56, 1803-1812
https://doi.org/10.1135/cccc19911803
Conductance studies of some 1:1 electrolytes in acetone + dimethylsulphoxide mixtures at 25 °C
Vijay K. Syal*, Suvarcha Chauhan, Alok Katoch and Mohinder S. Chauhan
Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla-171 005, India
Abstract
Precise molar conductances of Bu4NBPh4, Bu4NI, Bu4NNO3, AgNO3, LiNO3, NaBPh4 and KI have been measured in acetone (Ac), dimethylsulphoxide (DMSO) and Ac + DMSO mixtures over the whole solvent composition range at 25°C. The conductance data has been analysed by computer using Shedlovsky conductance equation. Limiting ionic conductances have been calculated by using Gill’s model. Evaluation of solvated radii of Li+, Na+, K+ and Ag+ ions in Ac + DMSO mixtures shows strong preferential solvation for Li+ ion by DMSO. Na+ and Ag+ ions are found to be preferentially solvated by DMSO in Ac-rich region and by Ac in DMSO rich regions. K+, NO3- and I- ions show no preferential solvation in Ac + DMSO mixtures.
