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Aldehydes and ketones undergo __________ reactions.(a) electrophilic addition(b) electrophilic substitution(c) nucleophilic addition(d) nucleophilic substitutionI got this question in semester exam.My enquiry is from Aldehydes and Ketones Chemical Reactions in section Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

Answer» CORRECT ANSWER is (c) nucleophilic addition

Best explanation: Aldehydes and ketones have a polar CO group which also has a double bond. The incoming nucleophile attacks the sp^2 hybridised carbon, THUS breaking the double bond and converting it into sp^3, and forming a tetrahedral ALKOXIDE intermediate. This undergoes another fast step to form an addition product.


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