試題詳解

24. The catalyzed reaction of benzene with Br₂ is shown in the following figure. Which of the following statements is correct about the sequence of reactions?
(A) Reactions of benzene and Br₂ are exothermic.
(B) From the reaction rate point of view, the catalyzed reaction of benzene with Br₂ is mainly a substitution reaction due to the lower activation energy of the reaction.
(C) Both bromobenzene and o-dibromobenzene are produced from the catalyzed reaction of benzene and Br₂.
(D) The rate-determining step in the catalyzed reaction of benzene with Bris accompanied by the breaking and formation of polar bonds.
(E) Heating the reaction not only speeds it up, but increases the equilibrium conversion of the substitution reaction.