Question

CaCo3 -> CaO—> CaC2—>C2H2—>C6H6—>C6H6CL—>C6H5OH

Answer 1

CaCO3=CaO+CO2

CaO+3C=CaC2+CO

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

3C2H2=C6H6

C6H6+Cl2=C6H5Cl+HCI

Answer 2

It seems like you're trying to describe a series of chemical reactions starting with calcium carbonate (CaCO3) and ending with phenol (C6H5OH). Let me break down each step of the reaction sequence you've provided:

1. CaCO3 -> CaO
   Calcium carbonate (CaCO3) decomposes when heated to produce calcium oxide (CaO) and carbon dioxide (CO2).

2. CaO -> CaC2
   Calcium oxide (CaO) can react with carbon (C) to form calcium carbide (CaC2).

3. CaC2 -> C2H2
   Calcium carbide (CaC2) can react with water (H2O) to produce acetylene gas (C2H2).

4. C2H2 -> C6H6
   Acetylene gas (C2H2) can undergo a series of polymerization reactions to form benzene (C6H6).

5. C6H6 -> C6H6Cl
   Benzene (C6H6) can be chlorinated to form chlorobenzene (C6H5Cl) in the presence of a chlorine (Cl2) source and a catalyst.

6. C6H5Cl -> C6H5OH
   Chlorobenzene (C6H5Cl) can undergo a reaction known as hydrolysis in the presence of a strong base (e.g., sodium hydroxide, NaOH) to convert it into phenol (C6H5OH).

This series of reactions outlines a transformation of calcium carbonate into phenol through several intermediate steps, each involving specific chemical reactions. It's important to note that these reactions typically require specific conditions, catalysts, and reagents to proceed efficiently, and they are not necessarily carried out in a single vessel or process. Additionally, chemical safety measures and regulations should be followed when working with these substances, as some of them can be hazardous.