I) H2O2+Cl2→2HCl+O2; II)H2O2+2NaOH→2Na2O2+2H2O; Role of H2O2 in the above reactions is

H2O2 acts as reducing agent in (I); It reduces Cl2 to Cl-H2O2 acts as an acid in (II) ; It reacts with sodium hydroxide to form a salt sodium peroxide ;