International Journal on Science and Technology

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Volume 17 Issue 1
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Kinetic and Mechanistic Investigation of Chromium (VI)-Mediated Oxidation of Primary and Secondary Alcohols

Author(s) Sudhanshu Shekhar, Dr. Manju Kumari
Country India
Abstract The oxidation of primary and secondary alcohols by Chromium(VI) reagents constitutes an important class of redox reactions in organic chemistry, offering valuable insight into reaction kinetics and mechanistic pathways. The present study investigates the kinetics and mechanism of Chromium (VI)-mediated oxidation of selected primary and secondary alcohols under controlled acidic conditions. Reaction rates were monitored spectrophotometrically, and kinetic data were analyzed to determine reaction orders with respect to the oxidant, substrate, and hydrogen ion concentration. The results indicate a first-order dependence on Chromium(VI) concentration and a fractional to first-order dependence on alcohol concentration, suggesting the involvement of intermediate complex formation. Temperature-dependent studies enabled the evaluation of activation parameters, supporting a mechanism involving chromate ester formation followed by its rate-determining decomposition to yield the corresponding aldehydes and ketones. Comparative analysis reveals distinct reactivity trends between primary and secondary alcohols, attributable to steric and electronic effects. The study provides a coherent mechanistic framework that enhances understanding of Chromium(VI)-mediated alcohol oxidation reactions.
Keywords Chromium(VI) oxidation, reaction kinetics, oxidation mechanism, primary alcohols, secondary alcohols.
Field Chemistry
Published In Volume 17, Issue 1, January-March 2026
Published On 2026-02-14
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