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Oxidation-reduction reaction of chromium (VI) and iron (III) with paracetamol: Kinetics and Mechanistic studies | Abstract
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Abstract

Oxidation-reduction reaction of chromium (VI) and iron (III) with paracetamol: Kinetics and Mechanistic studies

Author(s): Sylvester O. Adejo, Stephen G. Yiase, P. O. Ukoha, Boniface T. Iorhuna, Joseph A. Gbertyo

Kinetics of the oxidation of paracetamol (PCM),C8H9NO2,byCr (VI) and Fe (III) werecarried out in aqueous HNO3 (0.06 moldm-3) medium at ionic strength of 0.01 moldm-3 (NaNO3). Thestoichiometries of the reactions were determined to be 1:3 (Cr2O7 2-:C8H9NO2) and 2:1 (Fe3+ : C8H9NO2).Thereaction products were identified as sodium acetate, ammonium ions and benzoquinone. The following infrared stretching frequencies; υ(C=O),1623.15 cm-1 and 1644.37 cm-1; υ(C-H), 880.77 cm-1 and 875.71 cm-1 (out of plane bending); and υ(C=C), 474.63 cm-1 and 453.41 cm- 1wereobserved for the oxidized products of Cr(VI) and Fe(III), respectively.