JAMB Chemistry 2024 Paper

Concept:Strong and weak acids are classified by how completely they ionize in water.Explanation:The terms describe the extent of ionization of an acid in solution.A strong acid dissociates completely into ions in water.For example, $\mathrm{HCl}$ ionizes fully to give $\mathrm{H^+}$ and $\mathrm{Cl^-}$.A weak acid dissociates only partially in water.For example, ethanoic acid $\mathrm{CH_3COOH}$ ionizes only slightly into ions.Thus, the classification does not depend on the number of $\mathrm{H^+}$ released or the strength of its action on substances, but on the degree of ionization.Answer:C. extent of ionization of an acid.