1.
4Na + O2 = 2Na2O
Na2O + H2O = 2NaOH
2NaOH + H2SO4 = Na2SO4 + 2H2O
2.
4Ba + O2 = 2Ba2O
Ba2O + H2O = Ba ( OH ) 2
Ba ( OH ) 2 + 2HCl = BaCl2 + 2H2O
1.
4Na + O2 = 2Na2O
Na2O + H2O = 2NaOH
2NaOH + H2SO4 = Na2SO4 + 2H2O
2.
4Ba + O2 = 2Ba2O
Ba2O + H2O = Ba ( OH ) 2
Ba ( OH ) 2 + 2HCl = BaCl2 + 2H2O