The kinetics and mechanism of oxidation of sulfanilic acid by hexacyanoferrate
(III) catalyzed by osmium (VIII) and ruthenium (III) respectively have been studied
spectrophotometrically. The uncatalyzed reaction simultaneously occurring in absence of
these catalysts is suspected due to catalysis by any trace metal-ion present as an impurity
either in the reagents or water. The rate of the reaction was also retarded by
The energy and entropy of activation were calculated in these reactions. A plausible
reaction mechanism has been suggested in each case accounting for all the experimental observations.
Keywords: Hexacyanoferrate (III), kinetics, mechanism, oxidation, sulfanilic acid.
Rights & PermissionsPrintExport