TS EAMCET · Chemistry · Redox Reactions
Identify the oxidation states of \(\mathrm{Mn}\), when \(\mathrm{MnO}_4^{2-}\) ion undergoes disproportionation reaction under acidic medíum.
- A \(+2,+7\)
- B \(+2,+5\)
- C \(+4,+4\)
- D \(+7,+4\)
Answer & Solution
Correct Answer
(D) \(+7,+4\)
Step-by-step Solution
Detailed explanation
The disproportionation reaction for \(\mathrm{MnO}_4^{2-}\) occurs as follows : \(3 \stackrel{+6}{\mathrm{MnO}_4^{2-}}+4 \mathrm{H}^{+} \longrightarrow \stackrel{+4}{\mathrm{MnO}_2}+2 \stackrel{+7}{\mathrm{M} n} \mathrm{MO}_4^{-}+2 \mathrm{H}_2 \mathrm{O}\) Hence,…
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