Ring my bellAlevel chemistry AQA and OCRWord格式文档下载.docx
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MarkforsectionA……………/10
MarkforsectionB……………/25
MarkforsectionC……………/15
Total:
……………………………./50
Grade……..
SECTIONA
1.Whichoneofthefollowingdoesnotcontainanydelocalisedelectrons?
Apoly(propene)
Bbenzene
Cgraphite
Dsodium
Answer:
2.1,3-Dinitrobenzenecanbepreparedbyheatingnitrobenzenewithamixtureoffumingnitricacidandconcentratedsulphuricacid.Thereactioncanberepresentedbythefollowingequation.
Iftheyieldofthereactionis55%,themassof1,3-dinitrobenzeneproducedfrom12.30gofnitrobenzeneis
A16.90g
B16.80g
C9.30g
D9.24g
Forquestions3–5,Refertothefollowingreactionsequence:
3.Whichoneofthefollowingtypesofreactionisnotinvolvedintheabovesequence?
Aacylation
Boxidation
Creduction
Ddehydration
4.Whichoneofthefollowingtypesofreactionmechanismisnotinvolvedintheabovesequence?
Aelectrophilicaddition
Belectrophilicsubstitution
Caddition–elimination
Delimination
5.WhichoneofthefollowingwouldbethemostappropriatetocarryoutStep2?
AH2/Ni
BSn/HCl
CNaBH4
DFe/HCl
6.Whichoneofthefollowingcanreactbothbynucleophilicadditionandbynucleophilicsubstitution?
A
B
C
D
Summariseddirectionsforrecordingresponsestomultiplecompletionquestions
A
(i),(ii)and(iii)correctonly
B
(i)and(iii)correctonly
C
(ii)and(iv)correctonly
D
(iv)alonecorrect
7.Thecurlyarrowsareusedcorrectlyin
(i)
(ii)
(iii)
(iv)
8.Warfarin,shownbelow,isusedasabloodanticoagulant.
TypesofreactionundergonebyWarfarininclude
(1)electrophilicaddition.
(2)electrophilicsubstitution.
(3)nucleophilicaddition.
(4)nucleophilicsubstitution.
9.Correctstatementsinclude
(i)TheC–Cbondlengthinetheneisshorterthanthatinbenzene.
(ii)TheC–Cbondlengthinethaneisshorterthanthatincyclohexane.
(iii)TheH–C–Hbondangleinetheneisgreaterthanthatinethane.
(iv)TheC–C–Cbondangleinbenzeneisthesameasthatincyclohexane.
10.Xylocainehasthefollowingstructure.
Truestatementsaboutxylocaineinclude
(1)itissolubleindilutesodiumhydroxide.
(2)itcanformaquaternaryammoniumsalt.
(3)itcontainsachiralcentre.
(4)itcanundergoFriedel–Craftsreactions.
SECTIONB
11.Cumene,C6H5CH(CH3)2,isthemajororganicproductobtainedwhenbenzeneandpropenereacttogetherinthepresenceofaluminiumchlorideandhydrogenchloride.
(a)(i)Writeanequationshowinghowareactivespeciesisformedfrompropene,aluminiumchlorideandhydrogenchloride.
...........................................................................................................................
(ii)Namethetypeofsubstitutionreactionwhichfollowstheformationofthereactivespeciesaboveandoutlineamechanismforthissubstitution.
Typeofsubstitution...........................................................................................
Mechanism
(6)
(b)Explainwhypropylbenzene,C6H5CH2CH2CH3,isobtainedonlyasaminorby-productintheabovereaction.
.....................................................................................................................................
(3)
(c)Givethestructureofacompoundotherthanpropenewhichcouldbeusedtomakecumenefrombenzeneinthepresenceofaluminiumchloride.
(1)
(Total10marks)
12.N-Phenylethanamidecanbepreparedfrombenzeneinthreesteps:
(a)GivethereagentsrequiredtocarryoutStep1andwriteanequationfortheformationofthereactiveinorganicspeciespresent.Nameandoutlinethemechanismforthereactionbetweenthisspeciesandbenzene.
Reagents......................................................................................................................
Equationforformationofreactivespecies.................................................................
Nameofmechanism....................................................................................................
(7)
(b)NamethetypeofreactiontakingplaceinStep2andsuggestasuitablereagentorcombinationofreagents.
Typeofreaction..........................................................................................................
Reagent(s)...................................................................................................................
(2)
(c)WriteanequationforthereactionoccurringinStep3.Nameandoutlinethemechanismforthisreaction.
Equation
(Total11marks)
13.(a)(i)Whatfeatureoftheammoniamoleculeallowsittoactasabase?
..........................................................................................................................
(iii)Explainwhyphenylamineisaweakerbasethanammonia.
(Total3marks)
SECTIONC
14.Thetermacylationcanbeappliedtothereactionofethanoylchloridewithethylamineandalsotothereactionofethanoylchloridewithbenzeneinthepresenceofacatalyst.
Foreachofthesereactions,writeanequationfortheoverallreactionandnametheorganicproduct.Nameandoutlineamechanismforeachreactionandidentifyasuitablecatalystforthereactionwithbenzene.
(15)
(Total15marks)
……………………………………………………………………………………………………………………
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