Question

42. Which of the following equation depicts reducing
nature of H₂O₂?
(a) 2[Fe(CN)₆]⁴⁻ + 2H⁺ + H₂O₂ ⟶
2[Fe(CN)₆]³⁻ + 2 H₂O
(b) I₂ + H₂O₂ + 2OH⁻ ⟶ 2I⁻ + 2H₂O + O₂
(c) Mn²⁺ + H₂O₂ ⟶ Mn⁴⁺ + 2OH⁻
(d) PbS + 4H₂O₂ ⟶ PbSO₄ + 4H₂O

Answer 1

(d) PbS + 4H₂O₂ ⟶ PbSO₄ + 4H₂O is the answer

Answer 2

(b) I₂ + H₂O₂ + 2OH⁻ ----> 2I⁻ + 2H₂O + O₂

Explanation:

I₂ + H₂O₂ + 2OH⁻ ----> 2I⁻ + 2H₂O + O₂

In the above reaction, H2O2 acts as a reducing agent and reduces I2 to I-.

Option B is the answer.