Объяснение:
4Na + O2 =2Na2O
Na2O + H2O = 2NaOH
2NaOH + H2SO4 = Na2SO4 + 2H2O
Na2SO4 + Ba(OH)2 = BaSO4↓ + 2NaOH
NaOH + HNO3 = NaNO3 + H2O
Объяснение:
4Na + O2 =2Na2O
Na2O + H2O = 2NaOH
2NaOH + H2SO4 = Na2SO4 + 2H2O
Na2SO4 + Ba(OH)2 = BaSO4↓ + 2NaOH
NaOH + HNO3 = NaNO3 + H2O