Physicochemical Properties of Concentrated-Solutions of Some Alkali-Metal Halides in Aqueous Thiourea Solutions

Abstract

Viscosity, density and ultrasonic velocity measurements of some alkali metal halides in 1 M thiourea solution at four different temperatures have been determined. The viscosity data are analysed in terms of various viscosity equations to obtain B coefficients. Ionic viscosity coefficients, hydration numbers, apparent partial molar volumes and free volumes are calculated and discussed in terms of solute-solvent interactions. Activation parameters of viscous flow are calculated and discussed in terms of structure-breaking or making properties of the electrolyte solutions.