Suggest the name of a Lewis acid other than anhydrous aluminium chloride which can be used during ethylation of benzene.
Classify the following groups as activating or deactivating with respect to further electrophilic substitution of aromatic ring:
(a) – Cl (b) -CN
(c) – NH2 (d) –SO3H
(e) –NO2 (f) – CH3.
Last traces of water can be removed from benzene by using sodium metal. Why?
Last traces of water can be removed from benzene by using sodium metal because benzene does not react with sodium metal while water does. Hence, water is eliminated by reaction with sodium.