а)Cu + O2 -> CuOCuO + H2O -> Cu(OH)2Cu(OH)2 + 2HCl -> CuCl2 + 2H2O
б)2Na + O2 -> 2Na2ONa2O + H2O -> 2NaOH2NaOH + Cl2 -> 2NaCl + H2O
а)
Cu + O2 -> CuO
CuO + H2O -> Cu(OH)2
Cu(OH)2 + 2HCl -> CuCl2 + 2H2O
б)
2Na + O2 -> 2Na2O
Na2O + H2O -> 2NaOH
2NaOH + Cl2 -> 2NaCl + H2O