H2 + 2Na = 2NaH
H2O + NaH = H2 + NaOH
H2SO4 + 2NaOH → H2O + Na2SO4
Na2SO4 + Ba(OH)2 = 2NaOH + BaSO4
HCl + NaOH → H2O + NaCl
2NaCl = 2Na + Cl₂↑
H2 + 2Na = 2NaH
H2O + NaH = H2 + NaOH
H2SO4 + 2NaOH → H2O + Na2SO4
Na2SO4 + Ba(OH)2 = 2NaOH + BaSO4
HCl + NaOH → H2O + NaCl
2NaCl = 2Na + Cl₂↑