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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Redox Reactions

NTA Abhyas 2020 · Chemistry · Redox Reactions

Equivalent weight of KMn O _ 4 when it is convect into MnS O _ 4 is...

Equivalent weight of KMnO4KMn{O}_{4} when it is convect into MnSO4MnS{O}_{4} is Where M = molar mass of KMnO4KMn{O}_{4}.

Options

  1. AM/5
  2. BM/6
  3. CM/3
  4. DM/2

Correct answer

A. M/5

Step-by-step solution

MnO4−+5e−→Mn2+Mn{O}_{4}^{-} + 5e^{-} \to Mn^{2 +}

So equivalent weight of KMnO4KMn{O}_{4}

= \dfrac{\text{Molar mass of KMn}{\text{O}_{4}\left(M\right)}{\text{No. of mol of electrons gained by 1 mol of KMn}{\text{O}_{4}}

=M5= \dfrac{M}{5}.
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