CH4-CH4Cl-C2H6-C2H4-C2H2-CO2
CH4+Cl2=CH3Cl
2CH3Cl+2Na=2NaCl+C2H6
C2H6=C2H4+H2
C2H4=C2H2+H2
2C2H2+5O2=4CO2+2H2O
Сн4+Cl2=Ch3+HCl будет