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4. Using the average of the data from your three measurements of the pH of a saturated solution of Mg(OH)2, calculate the concentration of hydroxide ion in the solution. Using the hydroxide ion concentration, use stoichiometry to determine the Mg2+ concentration. Finally, using the Mg2+ and OH2 concentrations, calculate the solubility product of Mg(OH)2. 5. Look up the published solubility product constants for each of the metal salts that you are using in this experiment. Calculate the percent error between the published value and your measured value. If your measured value is within 5% of the published value, use your value for the calculations in the second part of this experiment. Otherwise, use the published value for the remainder of your calculations. 4. Using the average of the data from your three measurements of the pH of a saturated solution of Mg(OH)2, calculate the concentration of hydroxide ion in the solution. Using the hydroxide ion concentration, use stoichiometry to determine the Mg2+ concentration. Finally, using the Mg2+ and OH2 concentrations, calculate the solubility product of Mg(OH)2. 5. Look up the published solubility product constants for each of the metal salts that you are using in this experiment. Calculate the percent error between the published value and your measured value. If your measured value is within 5% of the published value, use your value for the calculations in the second part of this experiment. Otherwise, use the published value for the remainder of your calculations