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The oxidation kinetics of D-galactose with quinolinium chlorochromate, C(9)H(7)NHCrO(3)Cl, has been studied in aqueous acetic acid medium 50% (v/v) in the presence of perchloric acid at constant ionic strength. The reaction under pseudo-first order condition, is first order with respect to both the [oxidant] and the [substrate]. The reaction is markedly catalysed by [H+] and the effect of [NaClO(4)] is negligible. Increasing the dielectric constant of medium decreases the reaction rate. A 1 : 1 stoichiometry is observed and the reaction did not induce the polymerisation of acrylonitrile. The reaction has been carried out at different temperatures and the various activation parameters have been computed. A probable mechanism of the reaction is suggested.
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Tom
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35--43
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Bibliogr. 23 poz.
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autor
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- Department of Chemistry, Dr. H.S. Gour Vishwavidyalaya, Sagar 470 003 (M.P.) India
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bwmeta1.element.baztech-article-BPP1-0036-0061