Research
Kinetic Approach to the Reductionof Toluidine Blue by Dithionate Ion in Aqueous Acidic Medium
Article
January 20, 2014
The kinetics of redox reduction of Toluidine blue (hereafter referred to as TB+) by dithionate ion have been studied in acidic medium under pseudo-first order condition of excess [S2O6 2-] at 31± 1oC, [H+] = 1 x 10-2 mol dm-3, ionic strength (I) = 0.5 mol dm-3 (NaCl) and λ max 600 nm. The redox reaction displays a 1:1 stoichiometry and the reaction was found to be first order and 3/2 order in the oxidant and the reductant respectively. The reaction is also catalyzed by hydrogen ion with the empirical rate law as.
