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JEE Main 202226 JulyEvening Shift
Exam
JEE Main
Year
2022
Date
26 July
Shift
Evening Shift
Subject
Chemistry
Chapter
d and f Block Elements

JEE Main 2022 · 26 July · Evening Shift · Chemistry · d and f Block Elements

The products obtained from a reaction of hydrogen peroxide and...

The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are

Options

  1. AMn4+,H2O{Mn}^{4 +}, {H}_{2}O only
  2. BMn2+,H2O{Mn}^{2 +}, {H}_{2}O only
  3. CMn4+,H2O,O2{Mn}^{4 +}, {H}_{2}O, {O}_{2} only
  4. DMn2+,H2O,O2{Mn}^{2 +}, {H}_{2}O, {O}_{2} only

Correct answer

D. Mn2+,H2O,O2{Mn}^{2 +}, {H}_{2}O, {O}_{2} only

Step-by-step solution

Hydrogen peroxide acts as an oxidising as well as reducing agent in both acidic and alkaline media.

In this reaction MnO4−{MnO}_{4}^{-} act as an oxidising agent and hydrogen peroxide acts as a reducing agent. The reaction is shown below,

2MnO4−+6H++5H2O2→2Mn2++5O2+8H2O2{MnO}_{4}^{-} + 6{H}^{+} + 5{H}_{2}{O}_{2} \to 2{Mn}^{2 +} + 5{O}_{2} + 8{H}_{2}O

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