Decomposition of H2O2?

Question

What species is oxidised and what is reduced in the decomposition of H2O2? We also used a catalyst of Iron(III) Nitrate - what would the oxidation state of the iron be before and after the reaction?

Answer 1

when a catalyst is used, it ends up being what it started out as, so...

what would the oxidation state of the iron be before and after the reaction?...

your answer is Fe+3

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the oxygen in H2O2 is both oxidized & reduced

  2 O-1 --> O2 &  2 electrons lost ( a reduction)

  2O-1  & 2 electrons taken --> 2 H2O  ( an oxidation)

combined result 2 H2O2 --> 2 H2O  & O2