Catalyzed Hydrolysis Reaction Lab Report

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The kinetics of the acid catalyzed hydrolysis reaction of five Fe(II) Schiff base amino acid complexes were followed spectrophotometrically at 298 K. The used ONO donor ligands were derived from the condensation of salicylaldehyde with different five amino acids. The acid catalyzed hydrolysis reaction was studied in different ratios (v/v) of aqua – organic mixtures and in the presence of different concentrations of surfactants (CTAB and SDS). The increase in organic solvent ratio enhances the reactivity of the reaction. Moreover the addition of CTAB or SDS to the reaction mixture accelerates the reaction reactivity. The obtained kinetic data were used to determine the values of mG (the change in the activation barrier) for the studied complexes when transferred from "water to various ratios (v/v) of water – co organic mixtures" and from "water to water containing different concentration from CTAB or SDS". Schiff base amino acid complexes are importance chelates due to their physiological and pharmacological activities[1-5]. Fe-Schiff base complexes are very important chelates as it is considered to be synthetic models for the iron-containing enzymes[6-8] and oxidation catalysts of organic substrates[9-14]. Moreover, Fe-Schiff base complexes can act as anion carriers in some membrane electrodes[15]. The effects of solvent on the…show more content…
Tables 4 & 5 and Figs 8 & 9). The values of kobs. increase with increasing the concentration of the added surfactant (CTAB or SDS) at a constant [H+]. Moreover, the values of mG (change in the activation barrier) for the studied complexes on transported from aqueous solution into aqueous solution containing different [surfactant] is calculated (Figs. 10 & 11) from reaction rates in the appropriate media, using the

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