2HCl + Cu -> CuCl2 + H2
2HCl + CuO -> CuCl2 + H2O
NaOH + Fe + HCl -> FeCl3 + H2O + NaCl
ZnCl2 + 2NaOH -> Zn(OH)2 + 2NaCl
2HCl + Cu -> CuCl2 + H2
2HCl + CuO -> CuCl2 + H2O
NaOH + Fe + HCl -> FeCl3 + H2O + NaCl
ZnCl2 + 2NaOH -> Zn(OH)2 + 2NaCl