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JIPMER 2016
Exam
JIPMER
Year
2016
Subject
Chemistry
Chapter
d and f Block Elements

JIPMER 2016 · Chemistry · d and f Block Elements

The value of n in MnO_4^ - +8 H^ + +n e^ - Mn^ 2+ +4 H_2 O is

The value of n in MnO4−+8H++ne−⟶Mn2++4H2O\mathrm{MnO}_4^{-}+8 \mathrm{H}^{+}+n e^{-} \longrightarrow \mathrm{Mn}^{2+}+4 \mathrm{H}_2 \mathrm{O} is

Options

  1. A5
  2. B4
  3. C2
  4. D3

Correct answer

A. 5

Step-by-step solution

MnO4−+8H++5e−⟶Mn2++4H2O\mathrm{MnO}_4^{-}+8 \mathrm{H}^{+}+5 \mathrm{e}^{-} \longrightarrow \mathrm{Mn}^{2+}+4 \mathrm{H}_2 \mathrm{O}
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