Question

On reaction with stronger oxidizing agent like KIO4, hydrogen peroxide oxidizes with the evolution of O2. The oxidation number of I in KIO4 changes to____.

Answer 1

Hydrogen peroxide acts as an oxidising as well as reducing agent in both acidic and alkaline media.

But its reducing action is more effective in alkaline medium

$KIO_4+H_2O_2→KIO_3+O_2+H_2O$

The oxidation number of iodine in $IO_3^-$ is +5

The geometry of iodine containing compound changes from tetrahedral to pyramidal in the above reaction