Carry out the transformation CaCO3 → Ca (HCO3) 2 → CaCO3 → CO2 → Na2CO3 → NaHCO3 → CO2.
| December 29, 2020 | education
1. We receive calcium bicarbonate from calcium carbonate.
CaCO3 + CO2 + H2O -> Ca (HCO3) 2.
2. We receive by heating calcium carbonate from calcium bicarbonate.
Ca (HCO3) -> CaCO3 + CO2 + H2O (the reaction proceeds with heating).
3. We get carbon dioxide from calcium carbonate at temperature.
CaCO3 -> CaO + CO2 (decomposes when heated).
4. We get sodium carbonate from carbon dioxide.
Na2O + CO2 = Na2CO3;
5. We get sodium bicarbonate from sodium carbonate.
Na2CO3 + H2CO3 = 2NaHCO3.
6. We get carbon dioxide from sodium bicarbonate.
2NaHCO3 = Na2CO3 + H2O + CO2.
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