Chapter Nineteen Topic: Electrophilic Aromatic Substitution Section: 19.1

Which of the following reagents would you use as the basis for a simple chemical test that would distinguish between ethylbenzene and styrene?. Cyclohexene undergoes addition reaction with bromine, but benzene does not. Instead benzene undergoes a substitution reaction with bromine. Explain whyWhich chemical test would you use to distinguish between ethylbenzene and styrene? Ans: Styrene will react with Br2/CCl4, whereas ethylbenzene will not react.. Provide all the resonance structures of the sigma complex, when benzene reacts with an electrophile (E+ ).Which of these is the rate-determining step in the electrophilic aromatic substitution of benzene? A) Formation of an electrophile B) Formation of sigma complex. C) Loss of proton from sigma complex. D) Addition of electrophile & loss of proton E) None of theseThe electrophilic bromination or chlorination of benzene requires ______ along with the halogen.Which of the following reagents are used to carry out chlorination of benzene? A) Cl2/CCl4 B) Cl2/FeCl3 C) Cl2/AlCl3 D) NaCl/Fe E) both B & CWhich of the following reagents are used to carry out iodination of benzene? A) I2/CCl4 B) I2/FeCl3 C) I2/AlCl3 D) I2/CuCl2 E) NaI/Acetone9. List the three steps involved in an electrophilic aromatic substitution reaction.. Provide a stepwise curved arrow mechanism for chlorination of benzene in the presence of FeCl3.Predict the product for the following reaction.. Provide the curved arrow mechanism for the following reaction.Which one of the following reactions is most likely to give a polysubstituted product?Which one of the following compounds does not undergo Friedel-Crafts reaction? A) benzene B) chlorobenzene C) nitrobenzene D) toluene E) t-butylbenzenePredict the major product for the reaction between benzene and 2-chlorobutane in the presence of AlCl3. A) chlorobenzene B) sec-butylbenzene C) ethylbenzene D) isopropylbenzene E) t-butylbenzeneWhich of the following halides cannot be used for Friedel-Crafts alkylation reaction? A) bromobenzene B) vinylchloride C) 2-chloropropane D) chloroethane E) both A & BAryl and vinyl halides cannot be used in the Friedel-Crafts alkylation reaction, because they do not __________.. Provide a stepwise curved arrow mechanism for the following reaction