Abstract
The kinetics and mechanism of glutamic acid (GCO2H) oxidation by acid permanganate has been carried out in the absence and presence of sodium dodecyl sulphate (SDS). The surfactant enhances the reaction rate without changing the reaction mechanism. The overall rate expression for the reduction of MnVII may be written: $$ - d[Mn^{VII} ]_{total} /dt = \{ k_{4f} + k_{2f} /[H_ + ]\} x[GCO_2 H]_0 [Mn^{VII} ]total \cdot $$ The reaction appears to involve parallel consecutive processes in which MnIV is formed as the reaction intermediate k4f signifies the rate constant for the path leading to MnIV as intermediate, whereas k2f signifies the rate constant for the path leading to the reduction of MnVII to MnII, without prior formation of MnIV. A mechanism satisfying the various kinetic parameters is proposed.
Published Version
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