Chlorate and bromate ions

The kinetics of the reduction of chlorate ion by Ir(III) have been determined by controlled-potential electrolysis to be  

A simple electron transfer was proposed. Ir(VI) does not retard reaction and evidently the initial species ClOs must oxidise further Ir(ri[) very rapidly. 

The U(IV) reduction of bromate follows two paths in acid perchlorate or nitrate media , the rate law being 

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The specifications for chlorate and bromate ion concentrations have become more important [82,83], particularly with the increased use of hypochlorite solutions as a substitute for liquid chlorine in the treatment of potable water. Some authorities will limit the fraction of permissible impurity contributed by the disinfecting agent, and in some situations this will require the selective use of high-purity hypochlorite. 

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