Aldehydes, Ketones and Carboxylic Acids

Topics in this chapter

• Carbonyl Tests and Addition
• Aldehyde–Ketone Reactions
• Carbonyl Compound Preparation
• Carbonyl Reduction Methods
• Acid Acidity and Halogenation
• Acid Derivatives and Conversions

Cheat sheet

Practice questions

1. Question 1Q-52A59E

   Which of the following compounds undergoes aldol condensation most readily?

   1. A.Formaldehyde
   2. B.Benzaldehyde
   3. C.Acetaldehyde
   4. D.2,2-Dimethylpropanal
   See the answer and solution
2. Question 2Q-C6E74E

   The correct order of reactivity of the following carbonyl compounds towards nucleophilic addition reaction is:

   1. A.HCHO > CH3CHO > CH3COCH3 > (CH3)2CHCHO
   2. B.CH3COCH3 > CH3CHO > HCHO > (CH3)2CHCHO
   3. C.HCHO > CH3CHO > (CH3)2CHCHO > CH3COCH3
   4. D.(CH3)2CHCHO > CH3COCH3 > CH3CHO > HCHO
   See the answer and solution
3. Question 3Q-8758F3

   Which of the following reagents can be used to distinguish between benzaldehyde and acetaldehyde?

   1. A.Tollens' reagent
   2. B.Fehling's solution
   3. C.Iodine and sodium hydroxide
   4. D.2,4-Dinitrophenylhydrazine
   See the answer and solution
4. Question 4Q-F2A7EA

   Identify the main product (Z) in the following reaction sequence: Acetamide + P2O5 $\rightarrow$ X + H2O X + H2O / H+ $\rightarrow$ Y Y + SOCl2 $\rightarrow$ Z

   1. A.Acetonitrile
   2. B.Acetyl chloride
   3. C.Acetic anhydride
   4. D.Acetamide
   See the answer and solution
5. Question 5Q-9290E8

   Rosenmund reduction of an acyl chloride gives:

   1. A.An alkane
   2. B.An alcohol
   3. C.An aldehyde
   4. D.A ketone
   See the answer and solution