Study of Solute-Solvent Interaction of Some Pesticide-Monochrotophos with Aqueous Organic Sovlents

摘要

Ultrasonic velocity, density and viscosity measurements have been used to calculate isentropic compressibility ((β_s), intermolecular free length (L_f), ultrasound velocity (V), density ( ρ), excess viscosity (η), specific acoustic impedance (Z), Rao's constant (R), Shear's relaxation time (τ_s), apparent molal adiabatic compressibility (ξ_k) and excess values (A~E) of solutions of pesticides-monochrotophos in aqueous organic solvents such as benzene and toluene. In each case, ultrasound velocity decreases and isentropic compressibility ((β_s) intermolecular free length (L_f), density (ρ) and viscosity increases with the increases in molar concentration of monochrotophos. As usual apparent molal adiabatic compressibility (ξ_k) has been found to be negative in both cases. The results have been interpreted in terms of ion-solvent interaction on the basis of acoustic properties.