Question

Ca(OH)2-CaCO3-Ca(HCO3)2-CaCO3-CO2-Na2CO3

Answer 1

Ca(OH)2+H2CO3=CaCO3+2H2O
CaCO3+H2CO3=Ca(HCO3)2
Ca(HCO3)2+Ca(OH)2=2CaCO3+2H2O
CaCO3=CaO+CO2
Co2+Na2O=Na2CO3

Answer 2

The chemical equation for the reaction between the given compounds is:

Ca(OH)2 + CaCO3 + 2H2CO3 → 2Ca(HCO3)2 2Ca(HCO3)2 → 2CaCO3 + 2CO2 + 2H2O CaCO3 + Na2CO3 → 2NaHCO3

Overall reaction: Ca(OH)2 + 2Na2CO3 + 2H2CO3 → 2NaHCO3 + CaCO3 + 2H2O

Explanation:

1. Calcium hydroxide (Ca(OH)2) reacts with calcium carbonate (CaCO3) and carbonic acid (H2CO3) to form calcium bicarbonate (Ca(HCO3)2).
2. Calcium bicarbonate (Ca(HCO3)2) decomposes to form calcium carbonate (CaCO3), carbon dioxide (CO2), and water (H2O).
3. Calcium carbonate (CaCO3) reacts with sodium carbonate (Na2CO3) to form sodium bicarbonate (NaHCO3) and calcium carbonate (CaCO3).
4. The overall reaction shows that calcium hydroxide (Ca(OH)2) reacts with sodium carbonate (Na2CO3) and carbonic acid (H2CO3) to form sodium bicarbonate (NaHCO3), calcium carbonate (CaCO3), and water (H2O).

Note: This is a simplified representation of the reactions, as in reality, there may be other intermediates formed.