An aqueous solution of hydroiodic acid is standardized by titration with a 0.162M solution of calcium hydroxide. If 25.2mL of base are required to neutralize 15.7mL of the acid, what is the molarity of the hydroiodic acid solution? M hydroiodic acid An aqueous solution of barium hydroxide is standardized by titration with a 0.141 M solution of nitric acid. If 28.6mL of base are required to neutralize 27.1mL of the acid, what is the molarity of the barium hydroxide solution? 4 barium hydroxide