Question

Iodide catalyzed decomposition of hydrogen peroxide oscillating reaction

Answer 1

The key in this reaction is that H2O2 only slowly directly reacts with malonic acid and they both react more rapidly with iodate/iodine/triiodide anions (with help from the Mn+2 which acts as a catalyst). This keeps the reaction oscillating until you run out of H2O2 or malonic acid.

Answer 2

is what happens when such a mixture is agitated. During the induction period, taken here as the time to reach RO~(,), the iodine color deepens until Ro2(max) is reached … Smooth catalysis at low [H'], appeared to proceed by a different mechanism in this, the “iodidezone” …