2Сu+O2 -> 2CuO CuO+2HCl -> CuCl2+H2O CuCl2+NaOH -> Cu (OH) 2+2NaClCu (OH) 2 -t-> CuO+H2O Zn+O2 -> ZnO ZnO+2HNO3 -> Zn (NO3) 2+H2O Zn (NO3) 2+KOH -> Zn (OH) 2+2KNO3 Zn (OH) 2+H2SO4 -> ZnSO4+2H2O2K+2H2O -> 2KOH+H2 2KOH+CO2 -> K2CO3+H2O K2CO3+2HCl -> KCl+CO2+H2O 2KCl+H2SO4 -> K2SO4+2HClS+Fe-> FeS FeS+HCl -> FeCl2+H2S H2S+NaOH -> Na2S+H2SNa2S+H2SO4-> Na2SO4+H2SO4 C+O2 -> CO2 CO2+2NaOH -> Na2CO3+H2O Na2CO3+HCl -> NaCl+H2CO3 (Co2+H2O) Ba (OH) 2+CO2 -> BaCO3+H2O4P+5O2 -> 2p2O5 P2O5+3H2O -> 2H3PO4 2H3PO4+3CaO -> Ca3 (PO4) 2+3H2O Ca3 (PO4) 2+6HCl -> 3CaCl2+2H3PO4 H3PO4+2NaOH -> Na3PO4+3H2O 2Al+3H2SO4 -> Al2 (SO4) 3+3H2 Al2 (SO4) 3+6NaOH-> Al (OH) 3+3Na2SO4 2Al (OH) 3 -t-> Al2O3+3H2O Al2O3+6HNo3 -> 2Al (NO3) 3+3H2OFe+2HCl -> FeCl2+H2 FeCl2+2NaOH-> Fe (OH) 2 -> 2NaClFe (OH) 2+H2SO4 -> FeSO4+2H2O FeSO4+Zn -> ZnSO4+Fe2H2+O2 -> 2H2O 2Na+2H2O -> 2NaOH+H2 2NaOH+CO2 -> Na2CO3+H2O Na2CO3+2HNO3 -> NaNO3+CO2+H2O 2Fe+3Cl2 -> 2FeCl3 FeCl3+3HNO3 -> Fe (NO3) 3+3HCl 2Fe (NO3) 3+3H2SO4 -> Fe2 (SO4) 3+6HNO3 Fe2 (SO4) 3+Al -> Al (SO4) 4+Fe2Pb+O2 -> 2PbO PbO+HNO3 -> Pb (NO3) 2+H2O Pb (NO3) 2+2NaOH -> Pb (OH) 2+2NaNO3 Pb (OH) 2 -t-> PbO+H2O PbO+H2SO4 -> PbSO4+H2OH2+Cl2 ->2 HCl Fe+2HCl -> FeCl2+H2 FeCl2+Mg -> MgCl2+Fe MgCl2+2HNO3 -> Mg (N) 3) 2+2HCl HCl+Na -> NaCl+H2 2Na+2H2O -> 2NaOH+H2 NaOH+H2S -> Na2S+H2O Na2S+HCl -> NaCl+H2S 2NaCl+h2SO4 -> Na2SO4+Hcl Na2SO4+BaCl2 -> BaSO4+2NaCl
