الفهرس 
Preparation of formazansOnly 14 pages are availabe for public view
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Abstract
The work described in this thesis is devoted to study the effect of substituents, medium and to evaluate the mechanism of the electrode reaction for a series of azo compounds using DCPolarography, Coulometry, and Cyclic Voltammetry techniques. The data obtained was treated via Convolution and Deconvolution transformations of the current. Also, the kinetic parameters were determined by using Digital Simulations. The thesis comprises of three chapters: Chapter (I) includes the literature survey on the polarographic and cyclic voltammetric studies of the azo compounds. Chapter (11) contains the synthesis of the formazan compound and its derivatives, Preparation of solutions, working procedures and measurements using different techniques. Chapter (111) consists of seven parts: Part (1) includes the results obtained from the polarographic studies of the compounds under consideration in aqueous buffer solutions containing 45% (v/v) ethanol at different pH values (2- 12). The polarograms of the azo compounds (I-VIII) exhibited a single reduction wave within the entire pH range. This wave is attributed to the reduction of N=N-C=N-NH moiety. For the compound (IX) the wave splits into two waves of almost equal heights.