Question

Give the name and the formula of three consecutive members of the homologous series, alkynes.

Answer 1

The general formula for alkynes is C_nH_2n−2. Since the first member requires a carbon-carbon triple bond, the series starts at n = 2. Three consecutive members are:

1. Ethyne: C₂H₂
2. Propyne: C₃H₄
3. Butyne: C₄H₆