Add up the reaction equations that can be used to make the transformation: Etine → Ethen → Ethane → Chloroethane

Let’s solve the chain of transformations:
1. С2Н2 = Н2 + Н2С = СН2 – dehydrogenation reaction, ethene was obtained;
2. Н2С = СН2 + Н2 = Н3С – СН3 (С2Н6) – addition of hydrogen to ethene, ethane is released;
3. Н3С – СН3 + Cl2 = H3C – CH2Cl + HCl – substitution occurs in the light, ethane chloride was formed.
These reactions confirm the relationship between the classes of hydrocarbons: alkynes, alkenes, alkanes. In the course of the reactions, substances have been obtained that have practical application, for example, ethylene, which is the basis for the synthesis of a high-molecular substance-polyethylene. Chloroethane is used as a solvent.