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Aldehydes and ketones undergo __________ reactions.

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in Chemistry – Class 12 by (188k points)
Aldehydes and ketones undergo __________ reactions.

(a) electrophilic addition

(b) electrophilic substitution

(c) nucleophilic addition

(d) nucleophilic substitution

I 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

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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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