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The Cannizaro Reaction

Formaldehyde[...

Question

Formaldehyde[HCHO] undergoes Cannizzaro reaction: Give reason.

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Solution

Formaldehyde [ $H C H O$ ] undergoes Cannizzaro reaction because no $α$ - hydrogen atom is present in formaldehyde.
Note: Aldehydes and ketones having $α$ - hydrogen atom undergo Aldol condensation reaction. Aldehydes and ketones lacking $α$ - hydrogen atom undergo Cannizzaro reaction.

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