Which of the following compounds will react with Tollen's reagent?
Correct answer: A. CH3CHO
- A. CH3CHO
- B. CH3-CO-CH3
- C. CH3COOH
- D. CH3-CO-CH2-CH3
Explanation
This champion aldehyde readily participates in the Tollen's test, undergoing oxidation to acetic acid. The silver ions in the reagent get reduced, leading to the iconic formation of a sparkling silver mirror on the test tube's walls. The reaction equation goes like this:CH3CHO + 2AgNO3 + 3NH3 + H2O → CH3COOH + 2Ag + NH4NO3
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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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