Write the reaction equation: CH4-C2H4-C2H6-CO2

Let us write down the reaction equations for organic substances:
2СН4 = С2Н2 + 3Н2 – methane cracking occurs at a temperature of 500 degrees and the participation of a catalyst, acetylene is released;
C2H2 + H2 = H2C = CH2 – addition, ethylene was obtained;
Н2С = СН2 + Н2 = Н3С – СН3 – addition, ethane is formed;
2С2Н6 + 7О2 = 2СО2 + 6Н2О – combustion, carbon dioxide is released.
The above equations confirm the connection between alkanes and alkenes. The ethane combustion reaction shows the purpose of the substance as a fuel.