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1. What volume of a 0.200 M calcium hydroxide solution is required to neutralize 19.8 mL of a 0.144 M perchloric acid solution? ___mL calcium hydroxide

2. What volume of a 0.178 M potassium hydroxide solution is required to neutralize 23.2 mL of a 0.315 M hydrobromic acid solution? ___mL potassium hydroxide

3. An aqueous solution of calcium hydroxide is standardized by titration with a 0.200 M solution of perchloric acid. If 19.8 mL of base are required to neutralize 13.0 mL of the acid, what is the molarity of the calcium hydroxide solution? ___M calcium hydroxide

4. An aqueous solution of hydrobromic acid is standardized by titration with a 0.178 M solution of calcium hydroxide. If 23.2 mL of base are required to neutralize 24.4 mL of the acid, what is the molarity of the hydrobromic acid solution? ___M hydrobromic acid