caco3-cao-cac2-C2H2-c6h6-c6h6oh

CaCO₃ --> CaO + CO₂

CaO + 3C = CaC₂ + CO

CaC₂ + 2H₂O = C₂H₂ + H₂O

3C₂H₂ --> C₆H₆ (Kt=Cакт,t)

C₆H₆ + Cl₂ --> C₆H₅Cl + HCl, C₆H₅Cl  + KOH --> C₆H₅OH + KCl