Chemistry Class 11 Chapter 13. Hydrocarbons | Page 18

2. Aromatic hydrocarbons are immiscible with water but are readily miscible with organic solvents.
3. They burn with sooty flame.
Chemical properties
Arenes are characterized by electrophilic substitution reactions proceed via the following three steps:
� Generation of the electrophile
� Formation of carbocation intermediate � Removal of proton from the carbocation intermediate
benzene on treatment with excess of chlorine in the presence of anhydrous AlCl3 in dark yields hexa chlorobenzene( C6Cl6)
Addition reactions of benzene-
Directive influence of a functional group in mono substituted benzene:-
Ortho and para directing groups and activating- – OH, – NH2, – NHR, – NHCOCH3, – OCH3, – CH3, – C2H5, etc.