Question

(iv) which is a strongest
acid & why?
A) CH3COOH & ClCH₂COOH
B) C6H5COOH & p-NO2C6H4COOH ​

Answer 1

• The acidic strength of acetic acid is lower than that of 2-methoxy acetic acid as the methoxy group is an electron withdrawing group and stabilizes the carboxylate anion.

• The acid strength of 2-methoxyacetic acid is lower than that of trifluoroacetic acid as the methoxy group has less electron withdrawing power than trifluoromethyl group.

Hence, the correct order of increasing acid strength is a<b<c.