Question

Describe the action of alcoholic potassium hydroxide (alc. KOH) on ethyl bromide

Answer 1

Ethyl bromide: When ethyl bromide (bromoethane) is heated with alcoholic potassium hydroxide (alcoholic alkali), ethene (gas) is formed by the dehydrobromination reaction.

\[\ce{\underset{Ethyl bromide}{CH3 - CH2} - Br + \underset{(alc.)}{KOH} ->[heat] \underset{Ethene}{CH2 =}CH2 + KBr + H2O}\]