Make the equation: С2Н6 → С2Н4 → С2Н2 → С6Н6 → С6Н6Сl6

Let’s carry out the solution of the chain of transformations for organic substances:

Ethane – ethylene – acetylene – benzene – hexachlorane

C2H6 = C2H4 + H2 – dehydrogenation, ethylene was obtained;
C2H4 = H2 + C2H2 – acetylene formed;
3C2H2 = C6H6 – trimerization occurs on a hot carbon catalyst, benzene is released;
С6Н6 + 3Сl2 = C6H6Cl6 – addition occurs under illumination, hexachlorane is released.
The solution process shows the relationship of hydrocarbons: saturated, unsaturated and aromatic. The final product, hexachloran, is used in agriculture as an insecticide (for controlling insects).