Abstract

Densities and ultrasonic velocities of binary liquid mixtures of benzene with carbitols 2(2-methoxyethoxy)ethanol
(methyl carbitol), 2(2-ethoxyethoxy)ethanol (ethyl carbitol), and 2(2-butoxyethoxy)ethanol (butyl carbitol), have
been measured at 308.15 K. The observed data have been utilized to calculate various acoustical parameters
such as isentropic compressibility (KS), intermolecular free length (Lf), and acoustic impedance (Z). The various
excess properties such as excess ultrasonic velocity (uE), excess acoustic impedance (ZE), excess isentropic
compressibility (KSE), and excess intermolecular free length (LfE) were calculated. The results were discussed in
terms of the existence of intermolecular interactions between the components in the liquid mixtures under study.