1. СuO+H2SO4=CuSO4=H2O
CuSO4+2NaOH=Cu(OH)2+Na2SO4
Cu(OH)2+2NaCl=CuCl2+2NaOH
2. Fe2O3+6HCl=2FeCl3+3H2O
FeCl3+3NaOH=Fe(OH)3+3NaCl
Fe(OH)3+3NaCl=FeCl3+3NaOH
1)2Cu+O2=2Cuo
СuO+H2SO4=CuSO4+H2O
CuSO4+2LiOH=Cu(OH)2+Li2SO4
Сu(OH)2+2HCl=CuCl2+2H2O
1. СuO+H2SO4=CuSO4=H2O
CuSO4+2NaOH=Cu(OH)2+Na2SO4
Cu(OH)2+2NaCl=CuCl2+2NaOH
2. Fe2O3+6HCl=2FeCl3+3H2O
FeCl3+3NaOH=Fe(OH)3+3NaCl
Fe(OH)3+3NaCl=FeCl3+3NaOH
1)2Cu+O2=2Cuo
СuO+H2SO4=CuSO4+H2O
CuSO4+2LiOH=Cu(OH)2+Li2SO4
Сu(OH)2+2HCl=CuCl2+2H2O