Question

Liquid hydrogen peroxide decomposes to form an hydrogen gas

Answer 1

H2O2(l)⇌2H2O(l)+O2(g)

Explanation:

This is in fact a disproportionation reaction in that oxygen in peroxide (−I oxidation state) has given water (−II oxidation state for oxygen) and zerovalent oxygen gas (0 oxidation state for oxygen).

Often a Mn2+ salt is added to catalyze this reaction.