Volumetric and transport properties of phenol, sodium salicylate and sodium benzoate in aqueous solutions

Apparent molal volumes, apparent molal adiabatic compressibilities and visc osities of phenol, sodium salicylate and sodium benzoate in water have been determined at 288.15, 298.15, 308.15 and 318.15 K from density, speed of s ound and efflux time measurements. These data have been utilized to determi ne partial molal volumes ((V) over bar (o)(2)) and partial molal adiabatic compressibilities (K(S,2)degrees) at infinite dilution which have been fitt ed to suitable polynomials to estimate first and second derivatives with re spect to temperature. Viscosity B-coefficients for the various compounds ha ve been estimated using Jones-Dole equation. The activation energy for visc ous flow has also been estimated. These parameters have been discussed in t erms of solute-solvent and solute-solute interactions.