Abstract
Physicochemical and acoustic propertie of liquid mixtures give knowlegeble information behaviour and interactions studies of liquids. Ultrasonic studies in liquids and solutions provide some valuable information about the structure and interaction in such systems. Ultrasonic velocity and density have been proved to be important properties to test the validity of liquid state model. The ultrasonic velocity (U) and density (ρ) of the binary liquid mixtures Chlorobenzene (polar)+Cyclopentyl methyl ether (nonpolar) [system I] and Methyl acrylate (polar) +Cyclopentyl methyl ether (nonpolar) [system II] are measured at 298.15 K temp. with pure components. With the help of these measured properties are calculated excess acoustic parameters using standard relations. Excess acoustic parameters are used as a qualitative and quantitative analysis in multicomponent liquid mixtures. The sign and magnitude of excess parameters provided information of different type interactions. Structural chemistry is related to the interactions involved in the liquid systems. structural effects also define nature and bonding of both liquid mixture system I and II.