Kinetics of Alkaline Chloramine-T Oxidation of Glutamic Acid with and without Catalytic Action of Cu(II) Ion

Chemical Research Laboratories, R. B. B. College, Agra

Manuscript received 26 July 1982, revised 2 May 1983, accepted 27 October 1983

A kinetic study of the oxidation of glutamic acid by chloramine-T in aqueous alkaline media has been made. The findings follow the expression :

$-\frac{d}{dt}[CAT]=\frac{[CAT][S^{-}]}{[NaOH]}$ when [NaOH] < 4.8  x 10^-2 M  

$-\frac{d}{dt}[CAT]=\frac{[CAT][S^{-}]}{[NaOH]}$ when [NaOH] < 4.8  x 10^-2 M  

Similarly, for Cu(ll) catalysed reaction

$-\frac{d}{dt}[CAT]=\frac{[CAT][S^{-}][Cu(II)]}{[NaOH]}$ when [NaOH] < 4.8  x 10^-2 M  

which assumes the form

$-\frac{d}{dt}$ [CAT]=(CAT][S^-]  [Cu(II) when(NaOH) > 4.8 x 10 ^-2  M

Cu(II) catalyses the reaction and the catalytic action of Cu(II) is ascribed to the complex formation with glutamic acid anion. A negligible influence of added neutral salt on the reaction rate indicates interaction between a neutral molecule and -an ion in the rate-determining step.