The decomposition of hydrogen peroxide is catalyzed by
iodide ion. The catalyzed reaction is thought to proceed
by a two-step mechanism:
H2O21aq2 + I - 1aq2¡H2O1l2 + IO- 1aq2 1slow2
IO- 1aq2 + H2O21aq2¡H2O1l2 + O21g2 + I - 1aq2 1fast2
(b) Identify the intermediate, if any, in the mechanism.
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