We are asked to calculate the Ksp of Ca(OH)2 when it is shaken with water to produce a saturated solution. This solution is filtered and a 60.00 mL sample and was titrated with HCl requiring 11.18 mL of 0.0978 M HCl to reach the endpoint.
Step 1: First, we will get the number of moles of hydroxide. The reaction that happens during titration is:
Ca(OH)2 (aq) + 2 HCl (aq) → CaCl2 (aq) + 2 H2O (l)
A coefficient of two (2) is added to HCl and H2O to balance the equation.
Excess Ca(OH)2 is shaken with water to produce a saturated solution. The solution is filtered, and a 60.00 mL sample titrated with HCl requires 11.18 mL of 0.0978 M HCl to reach the end point.
Calculate Ksp for Ca(OH)2.
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