H.C NO 1.HNO3.H2SOa 2.Br2.FeBr3 3.CHCOCL,AICIs C) 1.CHgCOCL,AICI3 2.HN0,H2S04 3.Br2,FeBr D)both A and B E)both Band C Ans:C 6.Rank the following aromatics in order of decreasing reactivity toward electrophilic aromatic substitution (most reactive least reactive). A B C D A>C>D>B D-C>A-D Page5 Page 5 5. Which of the following sequences of reactants would you expect to convert benzene to the substituted aromatic shown below? H C NO2 3C O Br ? A) 1. HNO3, H2SO4 2. Br2, FeBr3 3. CH3COCl, AlCl3 B) 1. Br2, FeBr3 2. CH3COCl, AlCl3 3. HNO3, H2SO4 C) 1. CH3COCl, AlCl3 2. HNO3, H2SO4 3. Br2, FeBr3 D) both A and B E) both B and C Ans: C 6. Rank the following aromatics in order of decreasing reactivity toward electrophilic aromatic substitution (most reactive > least reactive). CH3 NO2 Br OH A B C D A) A > C > D > B D) D > A > C > B B) D > C > A > B E) C > A > D > B C) B > C > A > D Ans: D