CH4-CH3C1-C2H6-C2H4-C2H5C1-C2H4
1) С + 2H2 = CH4 2) CH4 + Cl2 = CH3Cl + HCl 3) 2CH3Cl + Zn = C2H6 + ZnCl2 4) C2H6 = C2H4 + H2 5) C2H4 + HCl = C2H5Cl C2H5CI + NaOH -> C2H5OH + NaCI C2H5OH -> C2H4 + H2O