Question

Arrange the following compounds in order of decreasing acidity:
with reason

Answer 1

Answer:

Electron donating groups increase the acidity of phenol when present as substituent on the benzene ring while electron withdrawing groups decrease the acidity of phenol.

Cl and NO2 are electron withdrawing groups while -CH3 and -OCH3 are electron donating groups.

However, nitro undergoes resonance also which allows it to better stabilize the negative charge of the oxygen as compare to chlorine and thus acidic character of nitro phenol would be higher than that of chloro phenol.

So, Nitrophenol is the most acidic compound here followed by chloro phenol.

Hence, the correct option is 2.

Answer 2

Answer:

answer provided by jetflier

Explanation:

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