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AQA A Level Chemistry 7405/3 Paper 3 June 2024 Question Paper
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AQA A Level Chemistry 7405/3 Paper 3 June 2024
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AQA A Level Chemistry 7405/3 Paper 3 June2024 Question Paper
, PleaseIwriteIclearlyIinIblockIcapitals.
CentreInumberIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII CandidateInumber
Surname
Forename(s)IIIIIIIIIIIIIII I
CandidateIsignatureIIIII
IIdeclareIthisIisImyIownIwork.
A-level
CHEMISTRY
PaperI 3
FridayI21I JuneI 2024 Morning TimeIallowed:I2Ihours
Materials
ForIthisIpaperIyouImustIhave: For Examiner’s Use
•I theIPeriodicITable/DataIBooklet,IprovidedIasIanIinsertI(enclosed)
•I aIrulerIwithImillimetreImeasurements Question Mark
•I aIscientificIcalculator,IwhichIyouIareIexpectedItoIuseIwhereIappropriate. 1
2
Instructions
3
•I UseIblackIinkIorIblackIball-pointIpen.
•I FillIinItheIboxesIatItheItopIofIthisIpage. 4
•I AnswerIallIquestions. 5
•I YouImustIanswerItheIquestionsIinItheIspacesIprovided.IIDoInotIwriteIoutside Section B
ItheIboxIaroundIeachIpageIorIonIblankIpages.
•I IfIyouIneedIextraIspaceIforIyourIanswer(s),IuseItheIlinedIpagesIatItheIendIof TOTAL
IthisIbook.IIWriteItheIquestionInumberIagainstIyourIanswer(s).
•I AllIworkingImustIbeIshown.
•I DoIallIroughIworkIinIthisIbook.IICrossIthroughIanyIworkIyouIdoInot
IwantItoIbeImarked.
Information
•I TheImarksIforIquestionsIareIshownIinIbrackets.
•I TheImaximumImarkIforIthisIpaperIisI90.
Advice
•I YouIareIadvisedItoIspendI70IminutesIonISectionIAIandI50IminutesIonISectionIB.
IB/M/Jun24/G4006/
, 2
DoInotIwriteI
outsideItheI
SectionIA box
AnswerIallIquestionsIinIthisIsection.
0III 1IIIIIIIIIIII TheIstructureIofI2-hydroxybenzenecarboxylicIacidIisIshown.
0III 1II.II 1IIIII GiveItheIequationIforItheIreactionIofI2-hydroxybenzenecarboxylicIacidIwithImethanol.
InIyourIequation,IincludeItheIskeletalIformulaIofItheIorganicIproduct.
[2Imarks]
AspirinIisIproducedIfromI2-
hydroxybenzenecarboxylicIacidIbyIreactionIwithIethanoicIanhydrideIinItheI
presenceIofIconcentratedIphosphoricIacid.
Method
1.IAddI2-hydroxybenzenecarboxylicIacidItoIaIconicalIflask.
2.IAddIexcessIethanoicIanhydride.
3.IAddIaIfewIdropsIofIconcentratedIphosphoricIacid.
4.IHeatItheIflaskItoI85I°CIforI10Iminutes.
5.ICoolItheIflaskIandIpourItheIcontentsIintoI150Icm3I ofIcoldIwater.
6.IFilterIandIwashItheIimpureIsolidIaspirin.
7.IRecrystalliseItheIaspirinIusingIaI50:50ImixtureIofIwaterIandIethanol.
8.ICheckItheIpurityIofItheIaspirin.
0 1II.II 2IIIII AspirinIcanIalsoIbeIproducedIbyIreactingI2-
hydroxybenzenecarboxylicIacidIwithIethanoylIchloride.
StateIwhyIethanoicIanhydrideIisIpreferredItoIethanoylIchlorideIforIthisIpreparation.
[1Imark]
*02*
IB/M/Jun24/7405/3
, 3
DoInotIwriteI
outsideItheI
0III 1II.II 3IIIII GiveItheInameIofItheImechanismIforItheIreactionIof box
2-hydroxybenzenecarboxylicIacidIwithIethanoicIanhydride.
[1Imark]
0III 1II.II 4IIIII SuggestItheIroleIofItheIconcentratedIphosphoricIacid.
[1Imark]
0III 1II.II 5IIIII SuggestIwhyIrefluxIisInotIessentialIwhenItheIflaskIisIheatedItoI85I°CIforI10Iminutes.
[1Imark]
0III 1II.II 6IIIII CompleteIandIlabelItheIdiagramItoIshowIhowItheIimpureIsolidIisIfiltered.
[2Imarks]
QuestionI1IcontinuesIonItheInextIpage
TurnIoverI►
*03*
IB/M/Jun24/7405/3
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