A mixture of benzaldehyde and formaldehyde on | vedclass

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Question

(A) This reaction is a cross-Cannizzaro reaction.In a cross-Cannizzaro reaction involving formaldehyde $(HCHO)$ and a non-enolizable aldehyde like ben

Vedclass · Accepted Answer

$PhCH_2OH$ and $HCOONa$

Vedclass · Answer

(A) This reaction is a cross-Cannizzaro reaction.In a cross-Cannizzaro reaction involving formaldehyde $(HCHO)$ and a non-enolizable aldehyde like benzaldehyde $(PhCHO)$,formaldehyde acts as the reducing agent because it is more reactive towards nucleophilic attack.Therefore,$HCHO$ is oxidized to formate $(HCOONa)$ and $PhCHO$ is reduced to benzyl alcohol $(PhCH_2OH)$.The reaction is: $PhCHO + HCHO \xrightarrow{NaOH} PhCH_2OH + HCOONa$.

$A$ mixture of benzaldehyde and formaldehyde on heating with aqueous $NaOH$ solution gives :-

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