СUso4-cu(oh)2-Cuo-cu-cucl2-cu(no3)2
CuSO4+2NaOH=Na2SO4+Cu(OH)2
Cu(OH)2=CuO+H2O
CuO+H2=Cu+H2O
Cu+2HCl=CuCl2+H2
CuCl2+2AgNO3=2AgCl+Cu(NO3)2