Kinetics and Mechanism of the Silver(I) Ion Catalysed Oxidation of Propionic Acid by Peroxodisulphate Ion

Chemical Laboratories, Agra College, Agra

Manuscript received 18 February 1977, revised, 22 August 1977, accepted 21 November 1977

Kinetics of Ag(I)-catalysed oxidation of propionic acid by peroxodisulphate have been studied. The rate is first order In peroxodisulphate and silver(I). A complex formation between Ag⁺ and propionic acid (P. A.) is indicated. The following rate law holds:

$\frac{d[S_2{O}^2-]}{dt}=$ [S₂O^2-}] {k₁ + $\frac{k_2[A{g}^{+}{]}_T}{1+K[PA]}$}

The values of k₁ and k₂ were found to be 0.30 x 10^-4 sec^-1 and 0.21 M^-1 sec^-1 respectively at 60°.