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TS EAMCET · Chemistry · Redox Reactions

Which one of following is a disproportionation reaction?

  1. A \(2 \mathrm{AgNO}_3(\mathrm{aq})+\mathrm{Cu}(\mathrm{s}) \longrightarrow \mathrm{Cu}\left(\mathrm{NO}_3\right)_2(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s})\)
  2. B \(3 \mathrm{AgNO}_3(\mathrm{aq})+\mathrm{K}_3 \mathrm{PO}_4(\mathrm{aq}) \longrightarrow \mathrm{Ag}_3 \mathrm{PO}_4(\mathrm{~s}) +3 \mathrm{KNO}_3(\mathrm{aq})\)
  3. C \(4 \mathrm{KClO}_3(\mathrm{~s}) \stackrel{\Delta}{\longrightarrow} \mathrm{KCl}(\mathrm{s})+3 \mathrm{KClO}_4(\mathrm{~s})\)
  4. D \(4 \mathrm{Fe}(\mathrm{s})+3 \mathrm{O}_2(\mathrm{~g}) \longrightarrow 2 \mathrm{Fe}_2 \mathrm{O}_3\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(4 \mathrm{KClO}_3(\mathrm{~s}) \stackrel{\Delta}{\longrightarrow} \mathrm{KCl}(\mathrm{s})+3 \mathrm{KClO}_4(\mathrm{~s})\)

Step-by-step Solution

Detailed explanation

Reaction (c) gives oxidation as well as reduction of same (one) species.