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Question
The correct order of reactivity of CH3CHO , CH3COC2H5 , CH3COCH3 and CH3CH2CHO
The correct order of reactivity of CH3CHO , CH3COC2H5 , CH3COCH3 and CH3CH2CHO
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Solution
The correct option is A CH3CHO > CH3CH2CHO > CH3COCH3 > CH3COC2H5
Aldehydes are typically more reactive than ketones due to the following factors.
- Aldehydes are less hindered than ketones (a hydrogen atom is smaller than any other organic group).
- The carbonyl carbon in aldehydes generally has more partial positive charge than in ketones due to the electron-donating nature of alkyl groups. Aldehydes only have one e- donor group while ketones have two.
So, as the partial positive charge decreases, the reactivity decreases. This means if electron donating groups increase then reactivity decrease.
Hence, Option "A" is the correct answer.
Aldehydes are typically more reactive than ketones due to the following factors.
- Aldehydes are less hindered than ketones (a hydrogen atom is smaller than any other organic group).
- The carbonyl carbon in aldehydes generally has more partial positive charge than in ketones due to the electron-donating nature of alkyl groups. Aldehydes only have one e- donor group while ketones have two.
So, as the partial positive charge decreases, the reactivity decreases. This means if electron donating groups increase then reactivity decrease.
Hence, Option "A" is the correct answer.
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