C2H2–>C2H4–>C2H4–>C2H5CL—>C2H5OH—>CO2

СH=-CH + H2 -> CH2=CH2 (t,kat)

CH2=CH2 + HCl -> CH3-CH2-Cl

CH3-CH2-Cl + NaOH -> CH3-CH2-OH + NaCl

CH3CH2OH + 3O2 -> 2CO2 + 3H2O