A New Polarographic Wave due to the Anodic Formation of Zinc Tetrathiocyanatomercurate (ll)

Abstract

Addition of zinc ion in a concentration higher than 0.5 mM to the supporting electrolyte of 1 M potassium thiocyanate results in the appearance of an anodic wave due to the formation of the ternary complex of zinc tetrathiocyanatomercurate (ll). This wave is very faint in DC step, but very prominent in AC peak. Evidences for the adsorption process involved in the anodic depolarization are given.