Aldehydes, Ketones and Carboxylic Acids · Class 12 · CBSE · Science Chemistry
The correct order of reactivity of the following carbonyl compounds towards nucleophilic addition reaction is:
Practice question from Aldehydes, Ketones and Carboxylic Acids (Class 12 · CBSE · Science Chemistry), with the correct answer and a step-by-step solution.
medium · MCQ · Q-C6E74E
The correct order of reactivity of the following carbonyl compounds towards nucleophilic addition reaction is:
- A.HCHO > CH3CHO > CH3COCH3 > (CH3)2CHCHO
- B.CH3COCH3 > CH3CHO > HCHO > (CH3)2CHCHO
- C.HCHO > CH3CHO > (CH3)2CHCHO > CH3COCH3Correct answer
- D.(CH3)2CHCHO > CH3COCH3 > CH3CHO > HCHO
Solution
Reactivity towards nucleophilic addition depends on steric and electronic factors. Smaller steric hindrance and greater positive charge on the carbonyl carbon increase reactivity. Formaldehyde is the most reactive, followed by simple aldehydes, branched aldehydes, and ketones which have two electron-donating alkyl groups and greater steric hindrance.
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