Solvation studies of dimethylsulfoxide in non-aqueous solvents at high temperatures and at an atmospheric pressure

Abstract

Solvation studies of pure non aqueous liquids like dimethylsulfoxide, pyridine and nitromethane and their binary mixtures have been measured at 0, 20, 40, 60, 80 and 100 mol% of pyridine and nitromethane at 298 K, 308 K and 318 K temperatures. Density, viscosity and ultrasonic velocities of the solvents have been measured. From the measured data, the isentropic compressibility and acoustic parameters like acoustic impedance, free volume, intermolecular free length, internal pressure, Gibb’s free energy, relaxation time, Rao’s constant, absorption coefficient, Wada’s constant, and entropy are calculated using experimental velocities, viscosities and densities at three different temperatures (298 K, 308 K and 318 K) and 1 atm pressure.