Question

Na-> NaOH-> Na2CO3-> NaCl-> AgCl

Answer 1

2Na + O2 = Na2O
Na2O + H2O = 2NaOH
2NaOH + CaCO3 = Na2CO3 + Ca (OH)2
Na2CO3 + 2HCl = 2NaCl + H2CO3
NaCl + AgNO3 = AgCl + NaNO3

Answer 2

1.2Na+2H2O=2NaOH+H2 2.2NaOH+CO2=Na2CO3+H2O 3.Na2CO3+CaCl2=2NaCl+CaCO3 4.NaCl+AgF=AgCl+NaF.