Answer :
Answer:
Protonation occurs at the carbonyl oxygen because the resulting conjugate acid is stabilized by resonance.
Explanation:
The carboxyl group is an organic and a functional group that consists of a carbon atom that's singly bonded to a hydroxyl group and double-bonded to an oxygen atom.
In the presence of strong acids, protonation occurs at the carbonyl oxygen because the resulting conjugate acid is stabilized by resonance.