The kinetics of the reactions of aqueous bromite ions with basic aqueous solutions of iodide, sulphite, formate, and thiosulphate ions have been investigated. The products are, respectively, iodate, sulphate, and carbonate ions, and with thiosulphate either tetrathionate or sulphate depending on the conditions. The reaction with formate is autocatalytic, being catalysed by carbonate ions. All the
... [Show full abstract] reactions show some dependence on hydroxide concentration, and in general k(apparent) = k1 + k2[OH−]−1. The various rate constants have been obtained, as have the associated kinetic parameters. The relative rates of the reactions of bromite ions parallel those of the corresponding reactions of hypochlorite ions, but at 25 °C K is smaller by a factor of roughtly 105.
