Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2011 Vol: 3 Issue: 5

Kinetics and mechanism of oxidation of 2-naphthol by nicotiniumdichromate


The kinetics of oxidation of 2.Naphthol by Nicotinium dichromate has been studied in 50% acetic acid- water (v/v) medium in the presence of perchloric acid at 303K. The reaction is first order each in [oxidant], [substrate] and independent of hydrogen ion concentration [H+] and dielectric constant of the medium. Increase in Ionic strength by the addition of NaClO4 has no effect on the rate constant. There is no polymerization with acrylonitrile. The reaction has been conducted at five different temperatures and activation parameters were calculated. The corresponding 1,2 Naphthoquinone has been identified as the product of oxidation. From the observed kinetic results a suitable mechanism consistent with rate data has been proposed.