Write down the equations: CH4- C2H4- C2H5OH- CO2- CaCo3

Let us write down the equations for the transformation chain:
2CH4 = C2H2 + 3H2 – decomposition reaction, acetylene was obtained;
C2H2 + H2 = C2H4 – addition, ethylene was formed;
Н2С = СН2 + Н2О = Н3С – СН2 – ОН (С2Н5ОН) – ethylene hydration, ethyl alcohol is released;
С2Н5ОН + 3О2 = 2СО2 + 3Н2О – combustion of ethanol, carbon dioxide and water are released;
СО2 + CaO = CaCO3 – compounds, calcium carbonate was formed.
The records of the reaction equations confirm the connection of hydrocarbons with inorganic substances. The reaction products find practical applications, for example, ethylene is the basis for the production of polyethylene.