How do I write a complete ionic equation and net ionic equation for: 2HCl(aq)+Ca(OH)2(aq) �¨ 2H2O(l)+CaCl2(aq) ?

Answer 1

Separate the compounds, if they are ionic, into ions. You add the (aq) and (l) and I'll do the remainder.
2H^+ + 2Cl^- + Ca^2+ + 2OH^- ==> 2H2O(l) + Ca^2+ + 2Cl^-

You can turn this into a net ionic equation by canceling the items common to both sides. So you cancel 2Cl^- and Ca^2+ which leaves you with
2H^+(aq) + 2OH^-(aq) ==> 2H2O(l)