Question

Ca(HCO3)2-CaCO3-CaO-CaC2-C2H2-C6H6-CO2

Answer 1

Ca(HCO3)2 = CaCO3 + H2O + CO2

CaCO3 = CaO + CO2

CaO + 3C = CaC2 + CO

CaC2 + 2H2O = Ca(OH)2 + C2H2

3C2H2 = C6H6

2C6H6 + 15O2 = 6H2O + 12CO2

Answer 2

The sequence you've provided represents a series of chemical reactions and compounds involving calcium (Ca) and various molecules. Let's break down the reactions step by step:

1. Ca(HCO3)2: Calcium bicarbonate This is a salt formed by the reaction of calcium hydroxide (Ca(OH)2) with carbon dioxide (CO2) and water (H2O).

2. Ca(HCO3)2 -> CaCO3 + CO2 + H2O Calcium bicarbonate decomposes into calcium carbonate (CaCO3), carbon dioxide (CO2), and water (H2O) when heated.

3. CaCO3: Calcium carbonate Calcium carbonate is a common compound found in nature, such as in limestone and chalk.

4. CaCO3 -> CaO + CO2 Calcium carbonate decomposes into calcium oxide (CaO), also known as quicklime, and carbon dioxide (CO2) when heated.

5. CaO: Calcium oxide (Quicklime) Calcium oxide is a white alkaline substance with various industrial applications, including as a flux in metallurgy and in cement production.

6. CaO + 3C -> CaC2 + CO Calcium oxide reacts with carbon (C) to produce calcium carbide (CaC2) and carbon monoxide (CO).

7. CaC2: Calcium carbide Calcium carbide is a compound used in the production of acetylene gas (C2H2) and various organic chemicals.

8. CaC2 + 2H2O -> C2H2 + Ca(OH)2 Calcium carbide reacts with water (H2O) to produce acetylene gas (C2H2) and calcium hydroxide (Ca(OH)2), also known as slaked lime.

9. C2H2: Acetylene Acetylene is a hydrocarbon gas used in welding, metal cutting, and as a precursor to other chemicals.

10. C2H2 + 3O2 -> 2CO2 + H2O Acetylene undergoes combustion with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O).

11. C6H6: Benzene Benzene is a cyclic aromatic hydrocarbon, a colorless liquid used as a solvent and in the production of various chemicals.

The overall reaction sequence starting with Ca(HCO3)2 and ending with CO2 involves several important chemical transformations and can be summarized as follows:

Ca(HCO3)2 -> CaCO3 + CO2 + H2O CaCO3 -> CaO + CO2 CaO + 3C -> CaC2 + CO CaC2 + 2H2O -> C2H2 + Ca(OH)2 C2H2 + 3O2 -> 2CO2 + H2O

It's important to note that chemical reactions can be complex and may require specific conditions to occur, such as heat, catalysts, or other reactants. Additionally, laboratory safety protocols should always be followed when dealing with chemicals and chemical reactions.