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Kinetics of Oxidation of Indigo Carmine by Vanadium (V) in Presence of Surfactants

Author Affiliations

  • 1Mahatma Gandhi Institute of Technical Education and Research Centre, Navsari, Eru-Aat road, Gujarat, INDIA

Res.J.chem.sci., Volume 5, Issue (11), Pages 24-30, November,18 (2015)


The kinetics of oxidation of Indigo carmine by V (V) has been investigated in aqueous sulphuric acid media. The reaction studied spectrophotometrically in aqueous sulphuric acid medium is first order in vanadium (V) and indigo carmine. Plots of kobs versus [H+] are linear with positive intercepts on kobs axes, suggesting the formation of a complex between vanadium (V) and dye. The oxidation of indigo carmine by V (V) in aqueous sulphuric acid media in the presence of cationic, anionic and non-ionic surfactants at different temperatures has been investigated. The activation and thermodynamic parameters have been calculated.


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