Effect of Aliphatic Mono Carboxylic acids and alcohols on Silver (I) Catalyzed oxidation of SO_2 in aqueous solution

In this paper we report the comparative study of formic acid and isopropyl alcohol on so_2 oxidation in ph range 4.02-5.25 in the presence of silver (i). based on the observed results following rate law given and a free radical mechanism has been proposed: -d[s(lv)]/dt = (k₁+ k₂[ag(i)]) [s(lv)]/1 + b [organics] experiments were carried out at 30≤ t°c≤ 40, 4.02 ≤ph≤ 5.25, 1×10−³ mol/dm³≤[s(lv)≤10×10−³mol/dm³,5×10−⁶mol/dm³≤[ag(i)]≤2.5×10−⁵mol/dm³,5×10−⁶ mol/dm³≤[formic acid]≤8×10⁻⁴mol/dm³,5×10−⁷mol/dm³≤[ isopropyl alcohol]≤8×10⁻⁴ mol/dm³. rate constants and order of reaction were calculated and found pseudo- first order in all cases. the effect of ph and temperature were also discussed. the value of apparent energy were found as 79.3 kj mol⁻¹ and 79.83 kj mol⁻¹in the presence of propyl alcohol respectively.