Write the reaction equations CO2- Na2CO3- NaHCO3- CO2- CaCO3

Let us write down the reaction equations for inorganic substances:
1. CO2 + Na2O = Na2CO3 – the reaction of the compound occurs with the participation of acidic oxide CO2 and basic oxide Na2O, sodium carbonate is obtained;
2. Na3CO3 + CO2 = 2NaHCO3 – compounds, sodium bicarbonate was formed;
3. 2NaHCO3 = CO2 + H2O + Na2CO3 – decomposition of sodium bicarbonate, sodium carbonate is released;
4. СО2 + CaO = CaCO3 – compounds, occurs when heated, sodium carbonate is formed.
These reactions show that the acidic oxide, the basic oxide, bonds with salts. The reaction products are of practical importance, for example, sodium bicarbonate is used as baking soda, calcium carbonate in cement is used in construction.