Polarographic studies on kinetics of electrode reaction of dibenzoylmethane

✍ Scribed by M.M. Srivastava; S.N. Srivastava

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 195 KB
• Volume: 30
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(85)80009-8

✦ Synopsis

Polarographic

behaviour of dibenzoyhuethane in aqueous ethanol (40 "/. v/v) has been studied at 25 f O.l"C as a function of pH using MCI buffer. Two well-defined waves are obtained in the pH range 2.2-5.0. While the first wave which corresponds to one-electron reduction process is irreversible and diffusion controlled, the second one is kinetic in nature; however in the pH range 6.0-7.6 a single irreversible and diffusion-controlled wave involving two electrons results. The kinetic parameters (an.,. ky,,) have been calculated by Koutecky's method. A tentative mechanism has been put forward for the reduction process of the depolarizer. Also, the effect ofdifferent supportmgelectrolytes on the kinetics of theirreversibleelectrode reaction of dibenzoylmethane has been investigated.