4.CuO+H2==Cu+H2O
5.CuO+2HCl==CuCl2+H2O
3.Cu(OH)2=加强热=CuO+H2O
2.CuCl2+2NaOH==Cu(OH)2(沉淀)+2NaCl
1.2Fe+3Cl2==2FeCl3