Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water: C6 H;COOH(aq) +H2O(1) - C6 H5COO (aq) + H30+(aq) The p K, of this reaction is 4.2. In a 0.69 mol L 1 solution of benzoic acid, what percentage of the molecules are ionized Express your answer to two significant figures and include the appropriate units. View Available Hint(s) A percent ionized = 1.053 % Submit Previous Answers