NaCl+H2O---NaOH+HCl
NaCl+ H2-----Na+ 2HCl
NaH+H2O-----NaOH+H2
2Na+O2------Na2O
Na2O+H2O-----2NaOH
2Na+O2-----Na2O2
Na2O2+CO2-----Na2CO3+1/2 O2