Осуществите цепочку превращений C2H6 -> C2H5Cl-> C4H10-> CH3 -CH = CH - CH3 -> CH3- CH - CH2 - CH3- -> Х | Cl
1) C2H6 + Cl2 = C2H5Cl + HCl 2) 2C2H5Cl + 2Na = C4H10 + 2NaCl 3) C4H10 = CH3-CH=CH-CH3 + H2 4) CH3-CH=CH-CH3 + HCl = CH3-CH2-CH(Cl)-CH3