Enumerate different aromatic electrophilic substitution reactions and provide the reactions that show how the electrophiles $(E^{+})$ are formed.

(N/A) Aromatic compounds like benzene undergo various electrophilic substitution reactions. The types of reactions,along with the generation of their respective electrophiles $(E^{+})$ using appropriate reagents and catalysts,are summarized in the table below:

Reaction	Electrophile Formation
$(1)$ Chlorination	$Cl_2 + FeCl_3 \to Cl^{+} + FeCl_4^-$
$(2)$ Bromination	$Br_2 + FeBr_3 \to Br^{+} + FeBr_4^-$
$(3)$ Nitration	$HNO_3 + 2H_2SO_4 \to NO_2^+ + H_3O^{+} + 2HSO_4^-$
$(4)$ Sulphonation	$2H_2SO_4 \to SO_3 + H_3O^{+} + HSO_4^-$
$(5)$ Friedel-Crafts Alkylation	$R-Cl + AlCl_3 \to R^{+} + AlCl_4^-$
$(6)$ Friedel-Crafts Acylation	$RCOCl + AlCl_3 \to RCO^{+} + AlCl_4^-$