Question

Write the structural formulae and IUPAC name of the second and third
homologues.

Answer 1

Structural formulae and IUPAC name of Second Homologues:

Propyne

\[\begin{array}{cc}
\ce{H}\phantom{.......}\\
|\phantom{.......}\\
\ce{H-C-C≡C-H}\\
|\phantom{.......}\\
\ce{H}\phantom{.......}\\
\end{array}\]

Structural formulae and IUPAC name of third homologues:

Butyne

\[\begin{array}{cc}
\phantom{...............}\ce{H}\phantom{...}\ce{H}\phantom{........}\\
\phantom{...........}|\phantom{...} \phantom{.}|\phantom{....}\\
\ce{H-C≡C-C-C-H}\\
\phantom{...........}|\phantom{...}\phantom{.}|\phantom{....}\\
\phantom{...............}\ce{H}\phantom{...}\ce{H}\phantom{........}\\
\end{array}\]