An Attempt to Interpret the Variations in Excess Viscosity in non-ideal Homogeneous Binary Liquid Systems

Department of Chemistry, Bhagalpur College of Engineering, Bhagalpur

Manuscript received 20 February 1974 ; revised 8 April 1974 ; accepted 15 July 1974.

In non-ideal homogeneous binary liquid systems, the occurrence of maxima or minima in the plots of excess viscosity \(n\)^E versus composition has been explained by assuming the existence of mobile liquid structures having a central molecule of one component surrounded by the molecules of the other component. Further, in order to decide which component provides the central molecule and which one provides the surrounding molecules, conditions involving a parameter obtained from \(n\)^E  versus composition curves are stated for polar-polar, non-polar-polar and nonpolar-nonpolar systems.