Benzaldehyde on heating with concentrated NaO | vedclass

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Question

(C) When benzaldehyde is heated with concentrated $NaOH$,it undergoes the Cannizzaro reaction. In this reaction,aldehydes that do not contain an $\alp

Vedclass · Accepted Answer

$C_6H_5CH_2OH$ and $C_6H_5COO^-Na^+$

Vedclass · Answer

(C) When benzaldehyde is heated with concentrated $NaOH$,it undergoes the Cannizzaro reaction. In this reaction,aldehydes that do not contain an $\alpha$-hydrogen atom undergo self-oxidation and reduction (disproportionation). Benzaldehyde $(C_6H_5CHO)$ lacks an $\alpha$-hydrogen,so it is reduced to benzyl alcohol $(C_6H_5CH_2OH)$ and oxidized to sodium benzoate $(C_6H_5COO^-Na^+)$. The overall reaction is: $2C_6H_5CHO + NaOH \xrightarrow{\Delta} C_6H_5CH_2OH + C_6H_5COO^-Na^+$

Benzaldehyde on heating with concentrated $NaOH$ gives:

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