C->CH4

C+2 H2=CH4

C2H2->CH4

C2H2+3 H2=2 CH4

CH4->CO2

CH4+2 O2=CO2+2 H2O

CH4->CH3Cl

CH4+Cl2=CH3Cl+HCl

CH3Cl->C2H6

2 CH3Cl+2 Na=C2H6+2 NaCl

C2H6->CO2

2 C2H6+7 O2=4 CO2+6 H2O