Explain the differences in aciditybetween p-methoxybenzoic acidand m-methoxybenzoic acid.
It is very often helpful to draw the resonance structures for each molecule in these conceptual-type questions. I have drawn two resonance forms for p-methoxybenzoic acid and m-methoxybenzoic acid.
The methoxy group is a powerful electron donating substituent. It releases electron density into the pi system of the aromatic ring. However, you will notice upon drawing all of the resonance forms that a formal negative charge can only …
The expert explains the differences in acidity between p-methoxybenzoic acid and m-methoxybenzoic acid.