The structural formula of the product of reaction of acetone with 2,4-dinitrophenyl hydrazine is:
Correct answer: D. D
- A. A
- B. B
- C. C
- D. D
Explanation
The reaction of 2,4- dinitrophenylhydrazine (2,4-DNPH) and acetone in the presence of acid leads to the formation of acetone 2,4-dinitrophenylhydrazone as shown in the equation below. 2,4-dinitrophenylhydrazine + acetone + acid → acetone 2,4-dinitrophenylhydrazone + water
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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