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Identify the catalyst in the nucleophilic addition of HCN to acetone.(a) NaOH(b) HCl(c) NaCl(d) NaCNI got this question during an interview.My question is from Aldehydes and Ketones Chemical Reactions topic in division Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

Answer» CORRECT option is (a) NaOH

Explanation: Acetone reacts with HCN to give a cyanohydrin of acetone. But this REACTION PROCEEDS very slowly with pure HCN. So, the reaction is carried out in a basic medium which removes the proton from HCN and produces CN^– ion which is a stronger nucleophile and makes the reaction faster.


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