Сu+О2=2CuO, CuO+2HNO3=Cu(NO3)2+H2O, 2Cu(NO3)2=2CuO+4NO2+O2CuO+2HCl=CuCl2+H2O
CuCl2+2NaOH=2NaCl+Cu(OH)2
Cu(OH)2 =CuO+H2O
CuO+Н2- Cu + Н2O
Сu+О2=2CuO,
CuO+2HNO3=Cu(NO3)2+H2O,
2Cu(NO3)2=2CuO+4NO2+O2
CuO+2HCl=CuCl2+H2O
CuCl2+2NaOH=2NaCl+Cu(OH)2
Cu(OH)2 =CuO+H2O
CuO+Н2- Cu + Н2O