Which one of the following is the strongest acid?
A) benzoic acid
B) 4-nitrobenzoic acid
C) 4-ethylbenzoic acid
D) 4-chlorobenzoic acid
E) 4-hydroxybenzoic acid

Question

Quizplus · Accepted Answer

4-nitrobenzoic acid is the strongest acid among the options because the nitro group (-NO2) is a strong electron-withdrawing group. It stabilizes the negative charge on the carboxylate ion formed after deprotonation more effectively than the other substituents listed, making the acid more likely to donate a proton.

Which One of the Following Is the Strongest Acid