Abstract

The oxidation of methyl red (MR) and methyl orange (MO) by Vanadium (V) in aqueous sulphuric acid media in the presence of anionic surfactants at different temperatures has been investigated. The reaction studied spectrophotometrically in aqueous sulphuric acid medium is first order in vanadium (V) methyl red (MR) and methyl orange (MO). Plots of k_obs versus [H⁺] are linear with positive intercepts on k_obs axes, suggesting the formation of a complex between vanadium (V) and dye. The activation and thermodynamic parameters have been calculated. The kinetic model use in this study to describe the dependence of rate constant on the reaction mechanism proposed

Keywords

Oxidation, Kinetics, Mechanism, Activation and thermodynamic parameters