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To find the pH of the solution, first calculate the moles of OH- from each solution (Ca(OH)2 and NaOH). Then, add the moles of OH- together and calculate the total volume of the combined solutions. Finally, use the concentration of OH- ions in the combined solution to calculate the pOH and pH of the solution.

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Q: What is the pH of a solution prepared by mixing 100.00 ml of 0.020 m caoh2 with 50.00 ml of 0.100 m naoh assume that the volumes are additive?
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