Abstract

The ultrasonic velocity measurements of solutions of chromium soaps (laurate, myristate, palmitate and stearate) in a mixture of xylene and methanol (4:1 (V/V)) have been used to evaluate various acoustic parameters (adiabatic compressibility, intermolecular free length, specific acoustic impedance, apparent molar compressibility, molar sound velocity, molar sound compressibility, relative association, available volume and solvation number). The results show that there is a significant interaction between soap and solvent molecules in dilute solutions and soap molecules do not aggregate appreciably in dilute soap solutions below the critical micelle concentration.

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