Question

Составить уравнения реакций для переходов: C-CO2-CaCO3-Ca(HCO3)2-CaCL2

Answer 1

C + O2=CO2

CO2+CaO.=CaCO3

CaCO3+H2O+CO2=Ca(HCO3)2

Ca(HCO3)2+ 2HCl= CaCl2 + H2O + CO2

Answer 2

Equations for the Given Transitions

The equations for the given transitions are as follows:

1. C to CO2: The combustion of carbon (C) to form carbon dioxide (CO2) can be represented by the equation: ``` C + O2 → CO2 ```

2. CO2 to CaCO3: The formation of calcium carbonate (CaCO3) from carbon dioxide (CO2) can be represented by the equation: ``` Ca(OH)2 + CO2 → CaCO3 + H2O ```

3. CaCO3 to Ca(HCO3)2: The dissolution of calcium carbonate (CaCO3) in carbonic acid (H2CO3) can be represented by the equation: ``` CaCO3 + H2CO3 → Ca(HCO3)2 ```

4. Ca(HCO3)2 to CaCl2: The reaction of calcium bicarbonate (Ca(HCO3)2) with calcium chloride (CaCl2) can be represented by the equation: ``` 2Ca(HCO3)2 → CaCl2 + 2CO2 + 2H2O ```

5. CaCl2: Calcium chloride (CaCl2) remains unchanged in the given transitions.

The above equations represent the chemical transitions from C to CO2 to CaCO3 to Ca(HCO3)2 to CaCl2.

[[1]](https://hti.urfu.ru/fileadmin/user_upload/site_15078/Kafedry/Analitiki/KHimicheskie_i_FKHAM._Sbornik_zadach.pdf)