الفهرس 
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Abstract
This thesis examined the redox behaviors at different temperatures for solutions of salts (Hibiscus sabdariffa, Copper Bromide and Sodium tetra chloroaurate) using cyclic voltammetry in absence and in the presence of some organic compounds such as methylene blue and Natural ligand Pectin in various electrolyte solutions using glassy carbon electrode and gold electrode as the working electrode. The results obtained were used to calculate of diffusion coefficients, rate of electron transfer constant, surface coverage, amount of cathodic and anodic electricity as well as calculations of Gibbs free energies and stability constants for the interaction of the transition elements (under-study) with some organic compounds and the Suggestion of the electrochemical reaction mechanism by using (Origin pro 8) and (DY 2000 EN Multichannel Potentiostat linked to the electrochemical cell which contain three electrodes put in Teflon cover with pyrex glass) . Also the cyclic voltammetry of ascorbic acid in 0.1 M KBr using gold electrode as standard antioxidant material was done and their data were compared with Egyptian sabdariffa results to obtain its oxidation capacity through the main reduction and oxidation peaks for O2. This thesis has shown many thermodynamic and kinetic coefficients of some transition elements and various atomic studies to try to use them in studying the different behavior of some ions used that are important biologically, environmental and geometrically.