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Subject - Chemistry:

Basics

MCQ - 313-2499

Question:

When propanal reacts with Tollens’ reagent, what are the principal inorganic and organic products?

  1. Ag and CH3CH2CH2OH
  2. Ag and CH3CH2CO2H
  3. AgNO3and CH3CH2CO2H
  4. Ag and CH3CH2CO2H

Correct Answer: B

Explanation:

Tollen’s regent [Ag(NH3)2]+ is reduced to Ag while aldehydes are oxidized to carboxylic acid CH3CH2CHO + 2[Ag(NH3)2]+ + 3OH-→CH3CH2CO2- + 2Ag↓ + 4NH3 + 2H2O

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