Write the reaction equation: methane-chloromethane-ethane-ethylene-ethanol-acetaldehyde

Let us write down the reaction equations for the transformation chain:
CH4 + Cl2 = CH3Cl + HCl – the substitution reaction is possible in the light, chloromethane is released;
2CH3Cl + 2Na = H3C – CH3 + 2NaCl – Wurtz reaction, ethane obtained;
Н3С – СН3 = Н2 + Н2С = СН2 – dehydrogenation, ethylene is formed;
Н2С = СН2 + Н2О = Н3С – СН2 – ОН – ethylene hydration, ethanol was formed;
Н3С – СН2 – ОН + CuO = H3C – CHO + Cu + H2O – a qualitative reaction for ethanol, alcohol is oxidized with copper oxide, and acetaldehyde (ethanal) is obtained.
The recording of the reactions confirms the genetic relationships of saturated, unsaturated hydrocarbons, as well as alcohols and aldehydes.