Write the reaction equations: CO2 – Na2CO3 – NaHCO3 – CO2 – CaCO3

To carry out the above chain of transformations, it is necessary to carry out the following reactions:

Chemical reaction and equation The reaction produces carbon monoxide. The reaction proceeds as a compound.

CO2 + C = 2 CO

Carbon monoxide react with oxygen. The reaction produces carbon dioxide. Redox reaction.

2 CO + O2 = 2 CO2

Chemical reaction and equation As a result of the reaction, sodium carbonate is formed and water is released.

CO2 + 2 NaOH = Na2CO3 + H2O

Sodium carbonate react with carbonic acid. As a result of the reaction, sodium bicarbonate is formed. The reaction proceeds as a compound.

H2CO3 + Na2CO3 = 2 NaHCO3

The decomposition of sodium bicarbonate. The reaction produces sodium carbonate, carbon dioxide and water.

2 NaHCO3 = Na2CO3 + CO2 + H2O

The decomposition of sodium carbonate to sodium oxide and carbon dioxide.

Na2CO3 = Na2O + CO2.



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