WAEC Chemistry 2023 Paper

Concept:A salt formed from a weak acid and a strong base produces a basic solution.Explanation:Ethanoic acid ($\mathrm{CH_3COOH}$) is a weak acid.Sodium hydroxide ($\mathrm{NaOH}$) is a strong base.They react to form sodium ethanoate ($\mathrm{CH_3COONa}$) and water.Sodium ethanoate is a salt of a weak acid and a strong base.When dissolved in water, the ethanoate ion ($\mathrm{CH_3COO^-}$) hydrolyses to produce hydroxide ions ($\mathrm{OH^-}$).Therefore, the resulting salt solution is basic.Answer:C. basic