1) CuO + 2HCl = CuCl2 + H2O
CuCl2 + 2NaOH = Cu(OH)2 +2 NaCl
Cu(OH)2 + H2SO4 = CuSO4 + 2H2O
2) Fe2(SO4)3 +6 NaOH = 2Fe(OH)3 +3 Na2SO4
2Fe(OH)3 = Fe2O3 + 3H2O
2Fe2O3 =4 Fe + 3O2
1) CuO + 2HCl = CuCl2 + H2O
CuCl2 + 2NaOH = Cu(OH)2 +2 NaCl
Cu(OH)2 + H2SO4 = CuSO4 + 2H2O
2) Fe2(SO4)3 +6 NaOH = 2Fe(OH)3 +3 Na2SO4
2Fe(OH)3 = Fe2O3 + 3H2O
2Fe2O3 =4 Fe + 3O2