Equation of combustion of methane is:
CH4 + 2 O2 → CO2 + 2 H2O
Methane is also called natural gas and can be used for electricity generation, as raw material for chemical processes, as a fuel for transportation purposes and as a rocket fuel.
Equation of combustion of ethane is:
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
Ethane is used for production of ethene and vinyl chlorides and as a refrigerant.