\(\left(1\right)Cu+Cl_2\overset{t^o}{--->}CuCl_2\)
\(\left(2\right)CuCl_2+2NaOH--->Cu\left(OH\right)_2+2NaCl\)
\(\left(3\right)Cu\left(OH\right)_2\overset{t^o}{--->}CuO+H_2O\)
\(\left(4\right)CuO+2HCl--->CuCl_2+H_2O\)
Cu+Cl2-to>CuCl2
CuCl2+2NaOH->2NaCl+Cu(OH)2
Cu(oH)2->CuO+H2O
CuO+2HCl->CuCl2+H2O