Which one is the most acidic compound?

Question

Canvas Classes · Accepted Answer

🧠 The Resonance Booster
Acidity of phenols is all about stabilizing the "Phenoxide" ion. If you have "electron-vacuums" (groups with  and  effects) on the ring, they suck away the negative charge from the Oxygen, making the acid stronger.

🗺️ Substituent Evaluation
1. Phenol: Basline.
2. Methyl Phenol:  is electron donating (). It destabilizes the anion. (Weaker acid).
3. Nitro Phenol:  is a heavy-duty electron withdrawer (). It stabilizes the anion exceptionally well. (Stronger acid).
4. Para

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