Question

You are given the following molecular formulae of some hydrocarbons:
C₅H₈; C₇H₁₄; C₆H₆; C₅H₁₀; C₇H₁₂; C₆H₁₂

Which two formulae represent unsaturated hydrocarbons having triple bonds?

Answer 1

C₅H₈ and C₇H₁₂ are the molecular formulae for the unsaturated hydrocarbons comprising triple bonds, as they correspond to the general formula of alkynes, i.e. C_nH_2n-2, where n is the number of carbon atoms in its one molecule.