4Na + O2 = 2Na2O
Na2O + H2O = NaOH
NaOH + HCl = NaCl + H2O
2NaCl + H2SO4 = Na2SO4 + 2HCl
Ba(NO3)2 + Na2SO4 = 2NaNO3 + BaSO4
4Na + O2 = 2Na2O
Na2O + H2O = NaOH
NaOH + HCl = NaCl + H2O
2NaCl + H2SO4 = Na2SO4 + 2HCl
Ba(NO3)2 + Na2SO4 = 2NaNO3 + BaSO4