Write chemical reactions to justify that hydrogen peroxide can function as an oxidising as well as reducing agent.

Hydrogen peroxide, H₂O₂ can act as an oxidizing as well as a reducing agent in both acidic and alkaline media.

Reactions involving oxidizing actions are:

(i) PbS + H₂O₂→ PbSO₄ + H₂O

(ii) 2F⁺² + H₂O₂→ 2F⁺³ + 2OH^-

Reactions involving reduction actions are:

(i) MnO₄^- + H₂O₂→ 2Mn⁺² + 8H₂O + 5O₂

(ii) HOCl + H₂O₂→ H3O⁺ + Cl^- + O₂