Verified Solution • 2025–26 Session moderate

QJEEM21Ch2d98: JEE Main 2021 Chemistry - Class 11 JEEM21Ch2d98 Solution: (A) HOCI + H 2 O 2 → H 3 O + + Cl - + O 2 (B) I 2 + H 2 O 2 +…

(A) HOCI + H2O2 → H3O+ + Cl- + O2

(B) I2 + H2O2 + 2OH- → 2I- + 2H2O + O2

Choose the correct option.

Multiple Choice Options

  • A H2O2 acts as reducing and oxidising agent respectively in equations (A) and (B).
  • B H2O2 act as oxidizing and reducing agent respectively in equations (A) and (B).
  • C H2O2 acts as oxidising agent in equations (A) and (B).
  • D H2O2 acts as reducing agent in equations (A) and (B).

Step-by-Step Verified Solution

In equation (A), HOCl undergoes reduction in presence of H2O2. JEE Main 2021 (Online) 24th February Morning Shift Chemistry - Hydrogen Question 54 English Explanation 1
Here, oxidation state of Cl changes from +1 to –1 (i.e. reduces)

∴ H2O2 act as reducing agent I2 reduces to I- in presence of H2O2.

In equation (B), JEE Main 2021 (Online) 24th February Morning Shift Chemistry - Hydrogen Question 54 English Explanation 2
Here oxidation state of iodine decreases (from 0 to –1)

∴ H2O2 act as reducing agent in both the equations.

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