2NaCl+CaCO3-->CaCl2+Na2CO3
Na2CO3+ H2O+CO2--> 2NaHCO3
NaHCO3+ZnCl2-->HCl+NaCl+ZnCO3
2NaCl+2H2O=Cl2+H2+2NaOH
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2NaCl+CaCO3-->CaCl2+Na2CO3
Na2CO3+ H2O+CO2--> 2NaHCO3
NaHCO3+ZnCl2-->HCl+NaCl+ZnCO3
2NaCl+2H2O=Cl2+H2+2NaOH