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The pH of the solution is 13.

Explanation:

pOH is defined as the negative logarithm of hydroxide ion concentration present in the solution.

We are given:

Concentration of          (Conversion factor: )

1 mole of calcium hydroxide produces 1 mole of calcium ions and 2 moles of hydroxide ions

Concentration of

Putting values in above equation, we get:

We know:

Hence, the pH of the solution is 13.

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