CH3-CH3 + CL2 = CH3-CH2CL + HCL
2 CH3-CH2CL + 2NA = 2NACL + CH3-CH2-CH2-CH3
CH3-CH2-CH2-CH3 -> CH2=CH2 + CH3-CH3
CH2=CH2 -> C2H2 + H2
CH3-CH3 + CL2 = CH3-CH2CL + HCL
2 CH3-CH2CL + 2NA = 2NACL + CH3-CH2-CH2-CH3
CH3-CH2-CH2-CH3 -> CH2=CH2 + CH3-CH3
CH2=CH2 -> C2H2 + H2