Benzoic acid-weak acid-stronger than acetic acid weaker than formic acid.

Why is benzoic acid a weak acid ?

In case of benzoic acid,the carboxylic acid group ( –COOH ) is directly attached to the sp2 hybridized carbon atom of aromatic benzene ring that is , attached with phenyl group.

Benzoic acid-definition-properties-preparation from benzene and phenol.

                                Benzoic acid definition in chemistry 

The most simplest aromatic mono carboxylic acid with molecular formula C₆H₅COOH, is called benzoic acid.This is also known as benzene carboxylic acid.