Chemistry · Aldehydes and Ketones
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Ketone can be oxidized by using:
- A
Tollen's reagent
- B
Fehling solution
- C
K2Cr2O7 with H2SO4
- D
K2Cr2O7 with HNO3
Ketones are generally resistant to oxidation due to the lack of a hydrogen atom attached to the carbonyl carbon. Therefore, they require very strong oxidizing conditions to be oxidized. Option C, which involves using K2Cr2O7 with H2SO4, provides such conditions. Tollen's reagent and Fehling's solution (Options A and B) are mild oxidizing agents suitable for aldehydes but not effective for ketones. Similarly, Option D, which involves using K2Cr2O7 with HNO3, is not typically used for oxidizing ketones.
Option A is incorrect because Tollen's reagent is a mild oxidizing agent that oxidizes aldehydes but not ketones.
Option B is incorrect because Fehling's solution is a mild oxidizing agent that can oxidize aldehydes but not ketones.
Option C is correct. Potassium dichromate with sulfuric acid is a strong oxidizing agent capable of oxidizing ketones, although it is not a typical reaction due to the resistance of ketones to oxidation.
Option D is incorrect because this combination is not strong enough to oxidize ketones, and HNO3 is not typically used with potassium dichromate for oxidizing ketones.
Tagged under Chemistry · Aldehydes and Ketones · 2003