(a) One test for the presence of an alkene is to add a small amount of bromine, a red-brown liquid, and look for the disappearance of the red-brown color. This test does not work for detecting the presence of an aromatic hydrocarbon. Explain.
(b) Write a series of reactions leading to para-bromoethylben beginning with benzene and using other reagents as needed. What isomeric side products might also be formed?