1. The problem statement, all variables and given/known data What [OH-] would lower the solubility of Mg(OH)2 to 1.5 x 10-5 mol/L? Ksp is 1.5 x 10-11 for Mg(OH)2. 2. Relevant equations Ksp=products/reactants 3. The attempt at a solution ICE box method Mg OH (2) Mg(OH)2 initial: ??? and I don't know what to do from here or even if this is the correct method to use.