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The carboxylic acid of least acidic stre...

The carboxylic acid of least acidic strength among the following is

A

p–nitrobenzoic acid

B

p–methylbenzoic acid

C

p–chlorobenzoic acid

D

p–methoxybenzoic acid

Text Solution

Verified by Experts

The correct Answer is:
D
Electron donating groups decrease acid strength of benzoic acid and electron withdrawing groups increase acidic strength. Order of +I effect is` −OMe gt −Me`, so, p-methoxy benzoic acid is weaker acid than p-methylbenzoic acid.
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