Which of the following classes of compounds on hydrolysis yields carboxylic acids?
(A) $RCN$
(B) $RCONH_2$
(C) $RCOCl$
(D) $RCOOR$
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A), (B), (C) and (D)
Detailed Explanation:
|
Compound |
Hydrolysis Reaction |
Product = Carboxylic Acid? |
|
(A) RCN (Nitrile) |
R–C≡N + 2H₂O + HCl → R–COOH + NH₄Cl |
Yes |
|
(B) RCONH₂ (Amide) |
R–CONH₂ + H₂O + HCl (or NaOH) → R–COOH + NH₄Cl (or NH₃) |
Yes |
|
(C) RCOCl (Acid chloride) |
R–COCl + H₂O → R–COOH + HCl |
Yes |
|
(D) RCOOR' (Ester) |
R–COOR' + H₂O → R–COOH + R'OH (acid/base catalysis) |
Yes |
All four functional groups are derivatives of carboxylic acids and undergo hydrolysis to give the parent carboxylic acid.