Question

Give the chemical equation for the preparation of ethyne from 1, 2-dibromoethane.

Answer 1

\ce{CH2Br + \underset{(alcoholic)}{2KOH} ->[200^\circ C][boiling] CH + 2KBr + 2H2O}\\
|\phantom{.......................}|||\phantom{...................}\\
\phantom{.}\ce{CH2Br}\phantom{................}\ce{\underset{(Ethyne)}{CH}}\phantom{.................}
\end{array}\]