Which is the more stable form of acetophenone?

Question

Quizplus · Accepted Answer

The more stable form of acetophenone is the keto form (II) because it has a resonance structure that delocalizes the positive charge on the carbonyl carbon onto the carbonyl oxygen and the neighboring aromatic ring, making the molecule more stable. The enol form (I) does not have this resonance structure and is therefore less stable. The enediol form (III) is even less stable due to the strain from the adjacent hydroxyl groups.

Which Is the More Stable Form of Acetophenone