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Effect of formaldehyde on kinetics and mechanism of oxidation of amino acids by bromamine t in perchloric acid medium



Effect of formaldehyde on kinetics and mechanism of oxidation of amino acids by bromamine t in perchloric acid medium



Indian Journal of Chemistry Section A Inorganic Physical Theoretical & Analytical 27(1): 34-38



The kinetics of oxidation of amino acids by bromamine-T (BAT) have been investigated both in the presence and absence of formaldehyde in perchloric acid medium. The reaction is first order in [BAT], zero order in both [amino acid] and [H+] and fractional order in [HCHO] in the presence of formaldehyde, and first order each in [oxidant], and [amino acid] and inverse first order in [H+] in the absence of formaldehyde. Addition of p-toluenesulphonamide or variation in ionic strength of the medium does not have any significant effect on the rate, but the decrease in dielectric constant of the reaction medium decreases the rate. Activation parameters have been computed from the Arrhenius plots and mechanisms in conformity with the observed kinetics have been suggested and related rate laws deduced. The oxidation process in the presence of formaldehyde proceeds via two pathways.

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Accession: 005239989

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