Consider the molecule p-aminobenzoic acid (). During a carefully controlled acid-base titration in a — GOC and Organic Chemistry Basics Chemistry Question

💡 Solution & Explanation

The molecule contains two functional groups: a carboxylic acid group ($-COOH$), which acts strictly as a Bronsted acid, and an amino group ($-NH_2$), which acts as a Bronsted base. Hydrochloric acid ($HCl$), being a strong acid, will only react with the basic amino group ($-NH_2$) to form an anilinium chloride salt. It will not react with the acidic carboxyl group. Therefore, exactly 1 mole of $HCl$ is consumed.