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11 Nov 2019
If you can explain why the answer is correct 4 FEED THIS DIRECTION Time: 1 Hour Answer the following (All questions carry equal points) t destio aromahary of 1) Which of these is the rate-determining step in the nitration of benzene? a) Protonation of nitric acid by sulfuric acid b) Protonation of sulfuric acid by nitric acid c) Loss of a water molecule by the protonated species to produce the nitronium ion to formm carc d)Addition of the nitronium to benzene to produce the arenium ion e) Loss of a proton by the arenium ion to form nitrobenzene 2) Which of these is the rate-determining step in the sulfonation of benzene? SOW est 6tep è¹ a) Formation of SO, from sulfuric acid b) Protonation of SOs sulfuric acid c) Addition of SO3H' to benzene to form the arenium ion tu acid and Loss of a proton from the arenium ion to form benzenesulfonic acid e) None of these choices. 太3) which ofthese is the rate determining step in the bromination of benzene? c Ouest sttr Tus is when oucthon forms a) Complexation of bromine with the iron(III) bromide catalyst Formation of Br' ion ( c) Addition of Br to benzene to form the arenium ion d) Loss of a proton from the arenium ion to form bromobenzene e) None of these choices. 4) Which of the following structures contribute(s) to the resonance hybrid of the intermediate formed when bromobenzene undergoes para-chlorination? : Br: : Br: aui ore resonanc structures tha resonana hyoic fovel whwn IV ol a) I c) IlI es
If you can explain why the answer is correct
4 FEED THIS DIRECTION Time: 1 Hour Answer the following (All questions carry equal points) t destio aromahary of 1) Which of these is the rate-determining step in the nitration of benzene? a) Protonation of nitric acid by sulfuric acid b) Protonation of sulfuric acid by nitric acid c) Loss of a water molecule by the protonated species to produce the nitronium ion to formm carc d)Addition of the nitronium to benzene to produce the arenium ion e) Loss of a proton by the arenium ion to form nitrobenzene 2) Which of these is the rate-determining step in the sulfonation of benzene? SOW est 6tep è¹ a) Formation of SO, from sulfuric acid b) Protonation of SOs sulfuric acid c) Addition of SO3H' to benzene to form the arenium ion tu acid and Loss of a proton from the arenium ion to form benzenesulfonic acid e) None of these choices. 太3) which ofthese is the rate determining step in the bromination of benzene? c Ouest sttr Tus is when oucthon forms a) Complexation of bromine with the iron(III) bromide catalyst Formation of Br' ion ( c) Addition of Br to benzene to form the arenium ion d) Loss of a proton from the arenium ion to form bromobenzene e) None of these choices. 4) Which of the following structures contribute(s) to the resonance hybrid of the intermediate formed when bromobenzene undergoes para-chlorination? : Br: : Br: aui ore resonanc structures tha resonana hyoic fovel whwn IV ol a) I c) IlI es
Lelia LubowitzLv2
29 Apr 2019