Verified Solution • 2025–26 Session moderate

QJEEM23Ch15bb: JEE Main 2023 Chemistry - Class 11 JEEM23Ch15bb Solution: In which of the following reactions the hydrogen peroxide acts…

In which of the following reactions the hydrogen peroxide acts as a reducing agent?

Multiple Choice Options

  • A Mn2++H2O2→Mn4++2OH−\mathrm{M{n^{2 + }} + {H_2}{O_2} \to M{n^{4 + }} + 2O{H^ - }}
  • B HOCl+H2O2→H3O++Cl−+O2\mathrm{HOCl + {H_2}{O_2} \to {H_3}{O^ + } + C{l^ - } + {O_2}}
  • C PbS+4H2O2→PbSO4+4H2O\mathrm{PbS + 4{H_2}{O_2} \to PbS{O_4} + 4{H_2}O}
  • D 2Fe2++H2O2→2Fe3++2OH−\mathrm{2F{e^{2 + }} + {H_2}{O_2} \to 2F{e^{3 + }} + 2O{H^ - }}

Step-by-Step Verified Solution

HOCl+H2O2⟶H3O⊕+Cl⊖+O2\mathrm{HOCl}+\mathrm{H}_{2} \mathrm{O}_{2} \longrightarrow \mathrm{H}_{3} \mathrm{O}^{\oplus}+\mathrm{Cl}^{\ominus}+\mathrm{O}_{2}

In this reaction H2O2\mathrm{H}_{2} \mathrm{O}_{2} is acting as a reducing agent as Cl\mathrm{Cl} is undergoing a change in oxidation state from +1+1 to −1-1 .

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