Acoustic properties of binary liquid mixtures of carbon tetrachloride with benzene and substituted benzenes

The ultrasonic velocities in binary liquid mixtures of carbon tetrachloride with benzene, toluene, m-xylene, ethyl benzene and chloro benzene have been measured at entire mole fraction range at 303.15K, using ultrasonic interferometer of frequency 2 MHz. Isentropic compressibilities K-S, deviations of K-S from ideal mole fraction mixture law Delta K-S, available volumes V-a, Lennard - Jones potential repulsive term exponents n, molecular interaction terms a etc. have been calculated there from. The values of acoustic parameters are explainable by considering the varying extent of molecular interactions and the difference in free volumes between unlike molecules. Observed Delta K-S have been analyzed in the light of Flory's theory of binary liquid mixtures. Ultrasonic velocities evaluated from Nomoto's and Ideal mixture relation due to Van Deal et al., have been compared with observed values.