Which Br∅nsted-Lowry base has the strongest conjugate acid?

Name: Which Br∅nsted-Lowry base has the strongest conjugate acid?
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Question

Quizplus · Accepted Answer

NOS(Sulfanilic acid) has the strongest conjugate acid because it can donate a proton to the base most easily due to the electron-withdrawing effect of the nitro group, which enables the negative charge on the resulting conjugate base to be dispersed over a larger area. Thus, NOS has the most stable conjugate base which indicates that it has the strongest conjugate acid.

Which Br∅nsted-Lowry Base Has the Strongest Conjugate Acid