1. Tardigrade
  2. Question
  3. Chemistry
  4. Which of the following reactions are disproportionation reactions? (I) Cu+ → Cu2+ + Cu (II) 3MnO4- + 4H+ → 2MnO4- + MnO2 + 2H2O (III) 2KMnO4 → K2MnO4 + MnO2 + O2 (IV) 2MnO4- + 3Mn2+ + 2H2O → 5MnO2 + 4H+

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Which of the following reactions are disproportionation reactions?
(I) $Cu^+ \to Cu^{2+} + Cu$
(II) $3MnO_4^- + 4H^+ \to 2MnO_4^- + MnO_2 + 2H_2O$
(III) $2KMnO_4 \to K_2MnO_4 + MnO_2 + O_2$
(IV) $2MnO_4^- + 3Mn^{2+} + 2H_2O \to 5MnO_2 + 4H^+$

The d-and f-Block Elements

Solution:

In $(I)$, $Cu^+$ is oxidised as well as reduced. In $(II)$, $MnO_4^-$ ions are oxidised as well as reduced.