Polarographic Studies on the Kinetics of the Electrode Reaction of 4-Benzoyl-1,5 Diphenyl Pyrazole-3-Carboxylic Acid

Authors : M VERİRŞEN

Pages : 335-340

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The polarographic behavior of 4-Benzoyl-1,5 diphenyl pyrazole-3- Carboxylic acid insert ignore into journalissuearticles values(BDPPCA); in aqueous ethanol solution insert ignore into journalissuearticles values(76 % v/v); at 25oC was studied as a function of pH using Mcl buffer solution. One well-defined wave was obtained in the pH range of 3.3-5.4. This wave, corresponding to two electron reduction processes, was irreversible and diffusion controlled. However, in the pH range of 5.4-7.4 a single reversible and diffusion-controlled wave involving two electrons resulted. The kinetic parameters insert ignore into journalissuearticles values(na, kof,h); were calculated by Koutecky`s method. A tentative mechanism was put forward for the reduction process of depolarizer. Furthermore, the effects of different supporting electrolytes on the kinetics of the irreversible electrode reaction of BDPPCA were investigated.
Keywords : Turk J Chem, 22, 1998, 335 340 Turk J Chem, vol 22, iss 4