Electrical Conductivity of s-Acetylthiocholine Halides and Perchlorate in Methanol at 35°C

Nasr H. El-Hammamy, Aida I. Ka

Abstract

The conductance data of s-acetylthiocholine halides and perchlorate in methanol solution at 35°C are presented. The data were analyzed using the Fuoss-Onsager equation to obtain the charachteristic parameters: equivalent conductance at infinite dilution Λ◦, the closest distance of approach (solvation) a◦ and association constant KA. The trend of KA is discussed in the light of the solvent separated-ion pair model. The electrostatic Stokes' radii R+ and R- are calculated and their sum is compared with the value of a°.