99 Percentile Qs Bank for JEE MainChemistryCarboxylic Acid Derivatives
Which is more stable?
Options
- AX
- BY
- CBoth are equally stable
- DCan't be predicted
Correct answer
B. Y
Step-by-step solution
In X structure,OH 2 + group is formed which is a good leaving group. Hence, X is highly unstable. In Y structure,resonance is observed and before protonation, 2 resonanting structures are possible which are given below: In carboxylic acid the oxygen attached to carboxyl carbon is more electronegative and withdraws the electrons of bond. Hence, proton gets attached to the negatively charged carbon. This is why Y structure is more stable than X.