4.5 Exercise 14

A sample of solid calcium hydroxide, Ca(OH)₂, is allowed to stand in water until a saturated solution is formed. A titration of 75.00 mL of this solution with 5.00 $\times$ 10⁻² M HCl requires 36.6 mL of the acid to reach the end point.
$\text{Ca} \left(\text{OH}\right)_{2} \left(a q\right) + 2 \text{HCl} \left(a q\right) \rightarrow \text{CaCl}_{2} \left(a q\right) + 2 \text{H}_{2} \text{O} \left(l\right)$

What is the molarity?