Hydrogen peroxide is _________.
The oxidising state of the oxygen atom on H2O2 is -1 which is an intermediate state. It means that it can either reduce itself to H2O where oxidation state of O is -2 or it can oxidise itself to O2, where the oxidation state of O is 0.
In the first case, H2O2 acts as an oxidising agent and in the second case, it acts as a reducing agent.
1