Watch the ChemTour animation below on acid$-$base titrations. Then, answer the questions about the following reaction:

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An aqueous solution of Ca$($OH$)2$with a concentration of $0\mathrm{.}200$ M was used to titrate $25\mathrm{.}00$ mL of aqueous HCl$.13\mathrm{.}83$ mL of the Ca$($OH$)2$was required to reach the endpoint of the titration.

$1$st attempt

Part $1(1$ point$)$See Periodic Table

How many moles of base were required to react completely with the acid in this reaction?

mol Ca$($OH$)2$

Part $2(1$ point$)$

How many moles of HCl were present in the original $25\mathrm{.}00$ mL of acid?

mol HCl

Part $3(1$ point$)$

What is the molarity of the original HCl solution?

Choose one:

$0\mathrm{.}401$ M

$0\mathrm{.}0556$ M

$1\mathrm{.}39\backslash$times $10-4$ M

$0\mathrm{.}222$ M

$0\mathrm{.}139$ M