CONDUCTOMETRIC AND VISCOMETRIC INVESTIGATIONS OF YTTRIUM CARBOXYLATES IN MIXED ORGANIC-SOLVENTS

Yttrium carboxylates (butyrate, valerate and caproate) behave as weak electrolyte in dilute solutions and the CMC decreases with increasing chainlength of fatty acid constituent of the molecule. The CMC, degree of dissociation and dissociation constant of yttrium carboxylates in a mixture of benzene and dimethylformamide (60:40, v/v) have been evaluated from conductometric measurements. The viscosity results are explained on the basis of equation proposed by Einstein, Vand, Moulik and Jones-Dole. The values of the molar volume calculated by the equations of Einstein and Vand are in agreement.