چكيده لاتين :
The kinetics of the permanganic oxidation process of glycine, L-alanine and L-leucine in strong acid media were investigated
using a spectrophotometric technique. Conclusive evidence has proven that the autocatalytic activity of Mn(II) in these reactions
in strong acidic media is analogous to that of weak acid media, but in the former, Mn(II) ions should acquire a critical
concentration for them to show autocatalytic characteristics. This critical concentration depends on the nature of the amino acid
used. Considering the delayed autocatalytic behavior of Mn(II) ions, we herein present the rate equations and mechanisms
satisfying observations for both catalytic and noncatalytic routes. The correspondence of the pseudo-order rate constants of the
catalytic and noncatalytic pathways to Eyring law verify both the critical concentration as well as the delayed autocatalytic
behavior concepts. In general, the onset of delayed behavior can be attributed to the concentration ratio of Mn(II) to amino acid
which can be of a certain value for any particular amino acid.
