A student is asked to standardize a solution of barium hydroxide. He weighs out 1.09 g potassium hydrogen phthalate (KHCH404, treat this as a monoprotic acid). It requires 22.1 mL of barium hydroxide to reach the endpoint. A. What is the molarity of the barium hydroxide solution? M This barium hydroxide solution is then used to titrate an unknown solution of nitric acid. B. If 29.0 mL of the barium hydroxide solution is required to neutralize 29.8 mL of nitric acid, what is the molarity of the nitric acid solution? M

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