C-ch4-ch3cl-c2h6-c2h5cl-c4h10-c2h6-co2 решите цепочку

1) C + 2H₂ = CH₄

2) CH₄ + Cl₂ = CH₃Cl + HCl

3) 2CH₃Cl + 2Na = C₂H₆ + 2NaCl

4) C₂H₆ + Cl₂ = C₂H₅Cl + HCl

5) 2C₂H₅Cl + 2Na = C₄H₁₀ + 2NaCl

6) C₄H₁₀ =t,kat= C₂H₆ + C₂H₄

7) C₂H₆ + 2O₂ = 2CO₂ + 3H₂