Make up the reaction equation: a) CH4 – C2H4 – C2H6 – CO2 b) C2H6 – CH3CH2Cl – CH2 = CH2 – C2H5OH

Let’s implement the solution:
a) 2CH4 = C2H2 + 3H2 – methane cracking is carried out in industrial plants at high temperatures up to 500 degrees, acetylene is released;
Н2С = СН2 + Н2 = Н3С – СН3 – addition, ethane was obtained;
C2H6 + 7O2 = 4CO2 + 6H2O – ethane combustion is accompanied by the release of carbon dioxide and water;
b) C2H6 + Cl2 = C2H5Cl + HCl – substitution occurs in the light, ethane chloride is released;
C2H5Cl + KOH = C2H5OH + KCl – exchange, ethanol was formed;
С2Н5ОН = Н2О + Н2С = СН2 – dehydration, ethylene is released;
Н2С = СН2 + Н2О = СН3 – СН2 – ОН – hydration, ethyl alcohol was obtained.
The above reactions confirm the connection of saturated hydrocarbons (alkanes) with unsaturated ones (alkenes), as well as with alcohols.