(Answered) It required 22.7ml of hcl to reach the orange-red end

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1) A student performed the titrations done in this experiment. The student pipetted 25mL of saturated calcium hydroxide solution into a flask and then titrated it with 0.103 M HCl. It required 22.7mL of HCl to reach the orange-red end point. Calculate the molar solubility and Ksp of calcium hydroxide.

2) A student performed the titrations done in this experiment. The student pipetted 25mL of solution that contained saturated calcium hydroxide solution and 0.05 M calcium ions into a flask and then titrated it with 0.103 M HCl. It required 2.77mL of HCl to reach the orange-red end point. Calculate the molar solubility of calcium hydroxide in this solution.

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