Question

Складіть рівняння реакцій, що відповідають таким перетворенням: а) Ca → Ca(OH)2 → CaCO3 → CaO → CaCl2 → CaCO3;

Answer 1

Відповідь:

Ca+2H2O=Ca(OH)2+H2

Ca(OH)2+CO2=CaCO3+H2O

CaCO3=CaO+CO2

CaO+2HCI=CaCI2+H2O+CO2

СаCl2 + Na2CO3 = 2NaCl + CaCO3

Пояснення:

Answer 2

Equation for the Given Transformations:

The given transformations can be represented by the following chemical equation:

Ca → Ca(OH)2 → CaCO3 → CaO → CaCl2 → CaCO3

Let's break down the equation step by step:

1. Ca → Ca(OH)2: This transformation involves the reaction of calcium (Ca) with water (H2O) to form calcium hydroxide (Ca(OH)2). The balanced equation for this reaction is:

Ca + 2H2O → Ca(OH)2

2. Ca(OH)2 → CaCO3: This transformation involves the reaction of calcium hydroxide (Ca(OH)2) with carbon dioxide (CO2) to form calcium carbonate (CaCO3). The balanced equation for this reaction is:

Ca(OH)2 + CO2 → CaCO3 + H2O

3. CaCO3 → CaO: This transformation involves the thermal decomposition of calcium carbonate (CaCO3) to form calcium oxide (CaO) and carbon dioxide (CO2). The balanced equation for this reaction is:

CaCO3 → CaO + CO2

4. CaO → CaCl2: This transformation involves the reaction of calcium oxide (CaO) with hydrochloric acid (HCl) to form calcium chloride (CaCl2) and water (H2O). The balanced equation for this reaction is:

CaO + 2HCl → CaCl2 + H2O

5. CaCl2 → CaCO3: This transformation involves the reaction of calcium chloride (CaCl2) with sodium carbonate (Na2CO3) to form calcium carbonate (CaCO3) and sodium chloride (NaCl). The balanced equation for this reaction is:

CaCl2 + Na2CO3 → CaCO3 + 2NaCl

Therefore, the overall equation for the given transformations is:

Ca + 2H2O → Ca(OH)2 + CO2 → CaCO3 → CaO + 2HCl → CaCl2 + H2O → CaCO3 + Na2CO3 → CaCO3 + 2NaCl

Please note that the equation provided is a simplified representation of the given transformations and may not account for all possible side reactions or conditions.