Stoichiometry of Bromide Production from Ceric Oxidation of Bromomalonic Acid in the Belousov-Zhabotinskii Reaction

Article abstract of DOI:10.1021/j100113a025

We investigated the number of Ce⁴⁺ ions required to produce one Br^- ion in the oxidation of bromomalonic acid by Ce⁴⁺ under conditions appropriate to the oscillating Belousov-Zhabotinskii (BZ) reaction.We found a ratio of 1:1, in agreement with earlier results by Jwo and Noyes (J.Am.Chem.Soc. 1975, 97, 5422), in the presence of oxygen.With oxygen excluded from the system, we found a ratio of 2:1.The presence of malonic acid in the system had no effect on the bromide production, contrary to the assumption of recent theoretical models of the Belousov-Zhabotinskii reaction.