2Na+2H2O=NaOH+H2
NaOH+CO2=NaHCO3
2NaHCO3нагрев=Na2CO3+H2O
Na2CO3+Ca(OH)2=CaCO3+2NaOH
NaOH+HCl=NaCl+H2O
2Na+2H2O=NaOH+H2
NaOH+CO2=NaHCO3
2NaHCO3нагрев=Na2CO3+H2O
Na2CO3+Ca(OH)2=CaCO3+2NaOH
NaOH+HCl=NaCl+H2O