Limiting apparent molar volumes, their temperature derivatives and viscosity B -coefficients for some alkali-metal chlorides in aqueous tetrahydrofuran mixture

Department of Chemistry, University of North Bengal, Darjeeling-734 430, India

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Manuscript received 16 February 2001, accepted 31 May 2001

Density and viscosity of lithium chloride, sodium chloride and potassium chloride have been measured in tetrahydrofuran (THF) + water mixture (60%, w/w) at different concentrations and at 303, 308, 313 and 318 K. From density data apparent molar volumes have been derived and analyzed using Masson equation. The limiting apparent molar volume (\(\Phi^o_v\)) and slope (\(S^*_v\)) are interpreted in terms of ion-solvent and ion-ion interactions, respectively. The viscosity data have been analyzed using Jones-Dole equation. The structure-making/breaking capacities of the salts have been inferred from the Hepler's and Sharma and Ahluwalia's criterion.