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Question
Which of the following alcohols forms a ketone when oxidized?
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Solution
The correct option is D 2-propanol
Oxidation of secondary alcohols usually give ketones, and that of primary alcohols give aldehydes. When a secondary alcohol is oxidized it is converted to a ketone. The hydrogen from the hydroxyl group is lost along with the hydrogen bonded to the second carbon. The remaining oxygen then forms double bonds with the carbon. This leaves a ketone, as R1-COR2. Ketones cannot normally be oxidized any further because this would involve breaking a C−C bond, which requires more energy.CH3−CH(OH)−CH3→CH3−CO−CH3+H2
Oxidation of secondary alcohols usually give ketones, and that of primary alcohols give aldehydes. When a secondary alcohol is oxidized it is converted to a ketone. The hydrogen from the hydroxyl group is lost along with the hydrogen bonded to the second carbon. The remaining oxygen then forms double bonds with the carbon. This leaves a ketone, as R1-COR2. Ketones cannot normally be oxidized any further because this would involve breaking a C−C bond, which requires more energy.
CH3−CH(OH)−CH3→CH3−CO−CH3+H2
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