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What is the pH of a solution prepared by dissolving 0.15 gram of solid CaO (lime) in enough water to make 2.00 L of aqueous Ca(OH)2 (limewater)? CaO(s) + H2O(l) → Ca^2+(aq) + 2 OH-(aq) A) 2.87 B) 11.43 C) 2.57 D) 11.13