Напишите уравнения реакций СH4 → X1 → X2 → X3 → X4 → ClCH2 – CH2Cl

1) СH4 + Cl2 → CH3Cl + HCl
2) 2CH3Cl + 2Na → C2H6 + 2NaCl
3) C2H6 → C2H4 + H2
4) 3CH2 = CH2 + 2KMnO4 + 4H2O → 3 CH2 – CH2 + 2MnO2 + 2KOH
                                                                     OH        OH
5) HOCH2 – CH2OH + 2HCl → ClCH2 – CH2Cl + 2H2O