Question:
Which of the following reactions is an example of a disproportionation reaction?
Which of the following reactions is an example of a disproportionation reaction?
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In a disproportionation, the same species is both oxidised and reduced.
Updated On: Oct 8, 2026
- Wolf-Kishner reduction.
- Aldol condensation.
- Clemmenson reduction.
- Cannizzaro reaction.
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The Correct Option is D
Solution and Explanation
Step 1: Recall the definition
Disproportionation means one species is oxidised and reduced at the same time.
Step 2: Check the reactions
Wolff-Kishner and Clemmensen are reductions of carbonyl to CH\(_2\). Aldol condensation forms a C-C bond.
In the Cannizzaro reaction, two molecules of an aldehyde with no alpha hydrogen give an alcohol (reduction) and an acid salt (oxidation). So (D).
Final Answer:
Cannizzaro reaction is a disproportionation, option (D). \[ \boxed{\text{(D)}} \]
Disproportionation means one species is oxidised and reduced at the same time.
Step 2: Check the reactions
Wolff-Kishner and Clemmensen are reductions of carbonyl to CH\(_2\). Aldol condensation forms a C-C bond.
In the Cannizzaro reaction, two molecules of an aldehyde with no alpha hydrogen give an alcohol (reduction) and an acid salt (oxidation). So (D).
Final Answer:
Cannizzaro reaction is a disproportionation, option (D). \[ \boxed{\text{(D)}} \]
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