Abstract

The kinetics of oxidation of aquairon(2+) by iodate in dilute perchloric acid have been studied at 35 °C in the presence of allyl alcohol, thus avoiding catalysis by the molecular iodine normally formed in this reaction. Overall, the reaction is 4Fe2++ IO3–→ 4Fe3++ II, followed by rapid removal of II by its reaction with allyl alcohol. The kinetic equation is –d[Fe2+]/dt= 4k1(k2+k3[Fe2+])[Fe2+][IO3–]/(k–1+k2+k3[Fe2+]). Aspects of the reaction mechanism are discussed.

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