Write the reaction equations: CaC2⇒HC≡CH⇒H2C = CH2⇒C2H5Br

To solve, we compose the equations:
1. CaC2 + 2H2O = Ca (OH) 2 + C2H2 – hydration, acetylene obtained;
2. С2Н2 + Н2 = Н2С = СН2 – hydrogenation, ethylene was released;
3. Н2С = СН2 + HBr = H3C – CH2Br – additions, bromoethane was formed.
The above records of the processes confirm the connection between inorganic and organic substances. The final product of the chain of transformations, bromoethane, is used as a solvent.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.