ELECTROCHEMICAL STUDY OF THE PERSULFATE ALPHA,ALPHA'-DIPYRIDILE-SILVER(I) SYSTEM

Voltammetry and controlled-current potentiometry with a negatively pol arized electrode coupled to SCE were employed to study the system pers ulphate-alpha,alpha'-dipyridile in the presence and absence of silver( I). Platinum, gold, palladium, graphite, and glassy-carbon were used a s indicator electrodes. Controlled-current potentiometry with platinum indicator electrode was employed to follow the kinetics of the system and to determine the partial reaction order with respect to each comp onent, including the effect of halides on the course of the reaction. Besides, the possibilities of using the title indicator system in the determination of either silver or halide ions were studied.