what is the net ionic reaction for coppper(II)chloride and sodium hydroxide?

Answer 1

Write the molecular equation. I assume CuCl2 and NaOH are in solution. They won't react as dry compounds.
CuCl2(aq) + 2NaOH(aq) ==> Cu(OH)2 + 2NaCl(aq)

Now separate each compound into ions using the following guidelines.
Aqueous solutions of strong electrolytes are written as ions.
Aqueous solution of weak electrolytes are written as the molecule.
Insoluble compounds are written as the molecule.