In this experiment, a solution containing Calcium Hydroxide and water was made to conduct three different methods of determining what Calcium Hydroxide’s Ksp is. Calcium Hydroxide’s dissociation looks like below: Ca(OH)2(s) ↔ Ca22+ (aq) + 2OH­(aq) Doing the three different methods will allow the class to find the mass of dried Calcium Hydroxide, The pH of the Calcium Hydroxide, and the pH of HCl, that will be titrated into the calcium solution.
a. Calculate the number of moles of HCl needed to reach the endpoint. b. Determine the molar solubility, and the solubility of Mg(OH) 2 in grams/100 mL. c. Calculate the Ksp of Mg(OH) 2. HINT: metal oxide plus water yield metal hydroxide. MATERIALS: Calcium metal or calcium oxide 50 ml Erlenmeyer flask Para film