Question

Write the general formula of alkene and alkyne and give a chemical test to distinguish them.

Answer 1

General formula of alkene = C_n H_2n
General formula of alkyne = C_n H_{2n – 2}
When ammonical cuprous chloride solution is added to an alkene, there is no effect. Where as when ammonical cuprous chloride solution is added to acetylene, red precipitate of cuprous acetylide is formed.