Idris, S.O.Sunday, E.Iyun, J.F.Mohammed, Y.2023-12-142023-12-142010-03-03Mohammed Et. el. (2010) Mechanism of the Redox Reaction of Hydroxylamine and Bromate Ions in Aqueous Hydrochloric Acid Mediumhttps://keffi.nsuk.edu.ng/handle/20.500.14448/5537Redox kinetics of the reaction of hydroxylamine hydrochloride (H2NOH.HCl) and BrO3– was carried out in aqueous acidic medium, at temperature of 29.5 ± 0.5ºC; ionic strength µ = 1.0 mol dm–3 (NaCl), [H+] = 1.0 x 10–2 mol dm–3 (HCl). The reaction showed a stoichiometry of 1:1.3, first order kinetics in both [NH3OH+] and [BrO3–], dependence on acid concentrations, positive salt effect, catalysis due to anions and absence of evidence of intermediate complex formation. Rate equation for the reaction has been proposed as: –d[NH3OH+]/ dt =(a[H+])[ NH3OH+][ BrO3–]. The second order rate constant for the NH3OH+– BrO3– reaction was found to be 0.233 dm3 mol–1 s–1. Based on the results obtained experimentally, the outer – sphere mechanism is suggested for the reactionenredox, kinetics, mechanism, catalysis, salt effect.Article