A barium hydroxide solution is prepared by dissolving 2.91 g of Ba(OH), in water to make 42.3 mL of solution. What is the concentration of the solution in units of molarity? concentration: M The barium hydroxide solution is used to titrate a perchloric acid solution of unknown concentration. Write a balanced chemical equation to represent the reaction between barium hydroxide and perchloric acid. chemical equation: If 24.5 mL of the barium hydroxide solution was needed to neutralize a 2.21 mL aliquot of the perchloric acid solution, what is the concentration of the acid? concentration: M

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