Question

Ca-->CACl2-->CaCo3-->CaO-->Ca

Answer 1

Ca+2HCl-->CaCl2 +H2
CaCl2 +H2CO3 --> CaCO3 + 2HCl
CaCO3 -->CaO + CO2
CaO +H2 --> Ca +H2O

Answer 2

The series of chemical reactions you provided describes the transformation of calcium (Ca) through various compounds. Let's go through each step:

1. Ca → CACl2: In this step, calcium (Ca) reacts with chlorine gas (Cl2) to form calcium chloride (CACl2). The chemical equation for this reaction is: Ca + Cl2 → CACl2

2. CACl2 → CaCO3: In the second step, calcium chloride (CACl2) reacts with sodium carbonate (Na2CO3) to produce calcium carbonate (CaCO3) and sodium chloride (NaCl). The chemical equation for this reaction is: CACl2 + Na2CO3 → CaCO3 + 2 NaCl

3. CaCO3 → CaO: In this step, calcium carbonate (CaCO3) undergoes a thermal decomposition reaction, producing calcium oxide (CaO) and releasing carbon dioxide (CO2). The chemical equation is: CaCO3 → CaO + CO2

4. CaO → Ca: Finally, calcium oxide (CaO) is subjected to a reduction reaction, where it reacts with hydrogen gas (H2) to revert back to calcium (Ca) and water (H2O). The chemical equation is: CaO + H2 → Ca + H2O

So, the entire series of reactions can be summarized as follows: Ca + Cl2 → CACl2 CACl2 + Na2CO3 → CaCO3 + 2 NaCl CaCO3 → CaO + CO2 CaO + H2 → Ca + H2O