Q14 / 160 · TS EAMCET 2016 · Chemistry

What is the change in the oxidation state of $\mathrm{Mn}$ in the reaction of $\mathrm{MnO}_4^{-}$with $\mathrm{H}_2 \mathrm{O}_2$ in acidic medium?

  • A
    $7 \rightarrow 4$
  • B
    $6 \rightarrow 4$
  • Correct answer
    C
    $7 \rightarrow 2$
  • D
    $6 \rightarrow 2$

Solution

Manganese exhibits oxidation states of $+2,+3,+4,+6$ and +7 . $\mathrm{So}$, in acidic medium on reaction of $\mathrm{MnO}_4^{-}$with $\mathrm{H}_2 \mathrm{O}_2$ it changes from 7 to 2 .

Hence, the correct answer is option: 'C'.

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