Как получить? Cu -> CuO -> CuCl2 -> Cu(OH)2 -> CuO -> Cu
2Cu+O2=2CuO
CuO+2HCl=H2O+CuCk2
CuCl2+2NaOH=2NaCl+Cu(OH)2
Cu(OH)2=CuO+H2O
CuO+2Li=Li2O+Cu
CuO+2HCl=H2O+CuCl2
CuCl2+2NaOh=Cu(oh)2+2Nacl
2CuO=2Cu+O2