Question

Find out the number of compounds which are more acidic than benzoic acid among the following.

Answer 1

Acidic strength can be attributed to the stability of the conjugate base. Electron donating species destabilise the conjugate base, whereas electron withdrawing group stabilises it.

Formic acid and oxalic acid are stronger acids than benzoic acid. Thus, a total of $4$ acids are stronger than benzoic acid among the given compounds.