2Na + O2 = Na2O2
Na2O + H2O = 2NaOH
2NaOH + H2SO4 = Na2SO4 + 2H2O
Na2SO4 + BaCl2 = 2NaCl + BaSo4
2NaCl = 2Na + Cl2
2Na + O2 = Na2O2
Na2O + H2O = 2NaOH
2NaOH + H2SO4 = Na2SO4 + 2H2O
Na2SO4 + BaCl2 = 2NaCl + BaSo4
2NaCl = 2Na + Cl2