Question 43
Carbohydrates, Proteins and AminesWhich of the following class of compounds can exist as dipolar ions in solution?
- A.Alkanoic acids
- B.Fatty acids
- C.Dialkanoic acids
- D.Amino acids
Show the answer and explanation
Answer: D (Amino acids)
Explanation
An amino acid has both −NH2 and −COOH groups, so it forms a zwitterion (+H3N−CHR−COO−).