Question

Draw different isomers having the following molecular formula:

Pentane (C₅H₁₂)

Draw the structures of isomers of pentane.

Answer 1

n-pentane:

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

2, 2-Dimethyl propane:

\[\begin{array}{cc}
\phantom{....}\ce{CH3}\\
\phantom{.}|\\
\ce{CH3 - C - CH3}\\
\phantom{.}|\\
\phantom{....}\ce{CH3}\\
\end{array}\]

2-Methyl butane:

\[\begin{array}{cc}
\ce{CH3}\phantom{............}\\
|\phantom{................}\\
\ce{CH3 - CH2 - CH2 - CH2}
\end{array}\]