STUDY OF THERMODYNAMIC PARAMETERS FOR OXIDATION OF p-HYDROXY BENZOIC ACID HYDRAZIDE BY THALLIUM(III) IN ACIDIC MEDIUM. A KINETIC AND MECHANISTIC APPROACH

摘要

The kinetics of oxidation of p-hydroxy benzoic acid hydrazides by thallium(III) in a mixture of perchloric and hydrochloric acid medium at a constant ionic strength has been studied iodometrically. The reaction proceeds through formation of complex with reactant, which decomposes in subsequent steps to give product. The increase in [H+] and [Cl-] decreases the rate of the reaction. The thermodynamic parameters were also determined and a mechanism is predicted.