Chemistry help please?

Question

A dilute hydrochloric acid solution is used to neutralize completely a calcium hydroxide solution. What volume of 3.16 mol/L HCl(aq) is required to neutralize completely 4.94 mol of calcium hydroxide??

Answer 1

Balanced equation:

Ca(OH)2(aq) + 2 HCl(aq) --> CaCl2(aq) + 2 H2O(l)

4.94 mol Ca(OH)2 X (2 mol HCl/1 mol Ca(OH)2) X (1 L/3.16 mol HCl) = 3.13 L HCl(aq)