(i). `underset("2,Methylbut-2-ene")(CH_(3)CH=C(CH_(3))_(2)+HB r)tounderset("2-Bromo-2-methylbutane")(CH_(3)-underset(H)underset(|)overset(H)overset(|)(C)-underset(Br)underset(|)overset(CH_(3))overset(|)(C)-CH_(3))`
(ii). `underset("Sod. Phenate")(C_(6)H_(5)ON a+C_(2)H_(5)Cltounderset("Ethoxybenzene")(C_(6)H_(5)OC_(2)H_(5)+NaCl`