COMEDK · Chemistry · 23. d and f Block Elements
In dilute alkaline solution \(\mathrm{MnO}_4^{-}\)changes to
- A \(\mathrm{MnO}_2\)
- B \(\mathrm{MnO}_4^{-}\)
- C \(\mathrm{MnO}\)
- D \(\mathrm{Mn}_2 \mathrm{O}_3\)
Answer & Solution
Correct Answer
(B) \(\mathrm{MnO}_4^{-}\)
Step-by-step Solution
Detailed explanation
In strong base, \(4 \mathrm{MnO}_4^{-}+4 \mathrm{OH}^{-} \longrightarrow 4 \mathrm{MnO}_4^{2-}+\mathrm{O}_2+2 \mathrm{H}_2 \mathrm{O}\)
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