CH_3CHO xrightarrow{HCN} A xrightarrow{H_3O^+ | vedclass

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Question

(C) The reaction sequence is as follows:$1$. Acetaldehyde $(CH_3CHO)$ reacts with $HCN$ to form acetaldehyde cyanohydrin $(A)$,which is $CH_3CH(OH)CN$

Vedclass · Accepted Answer

Lactic acid

Vedclass · Answer

(C) The reaction sequence is as follows:$1$. Acetaldehyde $(CH_3CHO)$ reacts with $HCN$ to form acetaldehyde cyanohydrin $(A)$,which is $CH_3CH(OH)CN$.$2$. The cyanohydrin $(A)$ undergoes acid-catalyzed hydrolysis $(H_3O^+)$ to convert the $-CN$ group into a carboxylic acid group $(-COOH)$.$3$. The resulting product $B$ is $CH_3CH(OH)COOH$,which is known as Lactic acid.Therefore,the correct option is $C$.

$CH_3CHO$ $\xrightarrow{HCN} A$ $\xrightarrow{H_3O^+} B$. The product $B$ is

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