JEE Mains · Chemistry · STD 11 - 7. Redox reactions
Which of the given reactions is not an example of disproportionation reaction?
- A \(2 H _{2} O _{2} \rightarrow 2 H _{2} O + O _{2}\)
- B \(2 NO _{2}+ H _{2} O \rightarrow HNO _{3}+ HNO _{2}\)
- C \(MnO _{4}^{-}+4 H ^{+}+3 e ^{-} \rightarrow MnO _{2}+2 H _{2} O\)
- D \(3 MnO _{4}{ }^{2-}+4 H ^{+} \rightarrow 2 MnO _{4}{ }^{-}+ MnO _{2}+2 H _{2} O\)
Answer & Solution
Correct Answer
(C) \(MnO _{4}^{-}+4 H ^{+}+3 e ^{-} \rightarrow MnO _{2}+2 H _{2} O\)
Step-by-step Solution
Detailed explanation
\(2 NO _{2}+ H _{2} O \rightarrow HNO _{3}+ HNO _{2} : Disproportionation\) \(MnO _{4}^{-}+4 H ^{+}+3 e ^{-} \rightarrow MnO _{2}+2 H _{2} O : reduction\) \(3 MnO _{4}^{+-}+4 H ^{+} \rightarrow 2 MnO _{4}^{-}+ MnO _{2}^{+4}+2 H _{2} O :Disproportionation\)
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