Make an equation: Ca → CaO → Ca (OH) 2 → CaCO3 → CO2 → Na2CO3

1. Obtaining calcium oxide by the interaction of simple substances:

2Ca + O2 = 2CaO.

2. Reaction of oxide with water to form hydroxide:

CaO + H2O = Ca (OH) 2.

3. Precipitation of a white precipitate in the form of calcium carbonate when passing carbon dioxide through a hydroxide solution:

Ca (OH) 2 + CO2 = CaCO3 + H2O.

4. The decomposition reaction at a high temperature of 900-1000 ° C with the formation of quicklime:

CaCO3 = CaO + CO2.

5. Production method for producing soda:

NH3 + CO2 + H2O + NaCl = NaHCO3 + NH4Cl.

With further dehydration by heating sodium bicarbonate, carbonate is obtained:

NaHCO3 = Na2CO3 + H2O.