The behaviour of liquid mixture of 2-Bromoanisole, 1-Butanol and n-Hexane as a function of temperature and composition has been investigated by measuring ultrasonic velocity in conjunction with density and viscosity at 303K, 308K and 318K for frequency 2 MHz using ultrasonic interferometer. With the help of the measured values ultrasonic velocity (u), viscosity (η) and density (ρ), the acoustical parameters like acoustic impedance, adiabatic compressibility, free length, free volume and internal pressure have been calculated. In order to know the molecular interaction between the components in the ternary liquid mixture, nature and strength of molecular interaction in the components of the ternary mixture, the actual values of acoustical parameters were computed in to their excess properties. Excess ultrasonic velocity (UE), excess acoustic impedance (ZE), excess intermolecular free length (LEf) excess adiabatic compressibility (βE), excess free volume (VfE) and excess internal pressure have been calculated for the ternary liquid mixtures containing 2-bromoanisole, 1-butanol in n-hexane at various temperatures 303K, 308K and 313K at fixed frequency 2MHz, for different concentrations ranges from 0.001M to 0.01M and fitted to the Redlich-Kister polynomial equation. The computed excess values of excess ultrasonic velocity, excess acoustic impedance, excess intermolecular free length, excess adiabatic compressibility, excess free volume and excess internal pressure were plotted against the concentration of ternary liquid of the mixture at different temperatures 303K, 308K and 313K at a fixed frequency of 2MHz. A good agreement has been found between the experimental and calculated values of the ultrasonic velocity. The strength and the nature of the interactions between like and unlike molecules have been discussed in terms of dipole-dipole, dipole-induced dipole, and induced dipole-induced dipole interaction through hydrogen bonding. The present study aims to evolve the impact of ultrasonic sound over the molecular interaction of ternary liquid mixture consisting of 2-bromoanisole, 1-butanol in n-hexane mixture at different temperature 303K, 308K and 313K.

J. Edward Jeyakumar, S.Chidambara Vinayagam, J. Senthil Murugan and P.S.Syed Ibrahim