山东大学《物理化学》2018-2019学年期末试卷

学院专业学院专业级学号姓名 2018-2019学年Fall学期FinalExamofPhysicalChemistGasconstantR=8.314Jmol-1K-1;FaradayconstantF=ATTENTION:Pleasewriteallyouranswe得分阅卷人1.Choosethebestanswerforthefollowingquestionsusingacircle(2pointsforeachquestion,totally30points)[1]ForanelementaryreactionA+BorderwhencA,0>>cB,0are【Ifyouchoose(A),you[2]Forthefollowingreactions,whichispossibleanel(B)withrateequation(C)whosereactionratedecreasewithincreasingtemperature;(D)withratelawof[3]Whichdoesnotaccountforthedifficultyinuseofstandardhy(A)Difficultpurificationofhydrogen;(B)easycontaminationofplatinizedPtfoil;(C)highexchangecurrentdensity;(D)Difficultmaintainingofeleis0.2moldm-3,thenitshalf-lifeis [5]ItwasfoundthatwecangetmoreBthroughreactitemperature.Thentherelationshipbetweentheactivatione(A)Ea,1>Ea,2,Ea,3;(B)Ea,2>Ea,1,Ea,3;(C)Ea,1<Ea,2,Ea,3;(D)Ea,3>[6]Forthefollowingreincreasingionicstr(B)CH3COOC2H5+OH-—喻CH3(C)S2O82-+2I-—喻2SO42-+I2molarconductivity(Λm)oftheKOHsolutionwillbe:(A)kincreasesandΛmalsoincreases;(B)kincreasesbutΛmdecreases;(C)kdecreasesbutΛmincreases;(D)kdecreasesandΛmalsodecreases;[8]ForreductionofNa+fromNaClaquevolutionofhydrogen:(A)UsingHgascathode;(B)IncreasesNaClconcen(C)Increasetemperature;(D)Increasecuprecipitationability?(A)FeCl3;(B)Al2(SO4)3;(C)MgC[10]Inindustry,ifwewanttoseparat(A)Saltingout;(B)Electrophoresis;(C)Precipit(C)surfacetension;(D)additionalpressureofwaterdrop.学院专业级学号姓名学院专业级学号姓名 2018-2019学年Fall学期butanoicacidmoleculeis0.314[9]WritethereductionreactionofAg2Oinalkalinesolution.2OH-.TheelectrochemicalcapacitanceofAg[10]ForH2andO2mixtureto(gaseousphaseorwall)terminationofradical.得分阅卷人[usingHgofhighhydrogenoverpotential;usinghighelectrolysiscurrentdensity][4]Designareversiblecellbasedonwhmeasured.Ag(s)|Ag+(m1)||SO42-|Ag2SO4(s)|Ag(s).[5]ForRRKMtheoryforumoleculeandtheenergizedmoleculeisthestructureoftheenergizedmoleculethatofproductwiththeenergyredistributingonthebondtobreak.[6]At273K,9.33kPa,theamo(STP);At303K,ifwewantthesameamountofadsorption,we29.06kPa,thentheadsorptionheat(ΔadsHm)ofNH3onthemol-1.Thisadsorptionisaphysic[7]InanalkalinesolutioncontainingNaOH,(HCOH)formingAusol.Itwasknowntcolloidalparticleis[(Au)m.nAuO2-.(n-x)Na+]x-xNa+III.Givebriefanswertothef[1][8points]Whenelectrolyzinganeutral(pH=7)saturatedNaClsolution(25.93wtamalgam(Na(Hg)x).Givenexplanationtothefollowingquest(1)Whatmeasureshavebeentakenbyustolowertheevo[12][12]Watercanrisealengthinwaterwhat(C)Nospillingbutwithconcavesurface;(D)[13]ForAgIsolpreparedbyaddingdiluttheelectrodynamicpotential(ζ)ofcolloidalparticleisofvalue.(A)negative;(B)positive;(C)neutral;(D)[14]WhatsolutioncanbeusedtodispersethenewlypreparedFe(OH)3prec(A)NaOH;(B)MgCl2;得分阅卷人[1]Decompositionofethyleneepoxide(环氧乙烷)isafirst-orderreac[3]At298K,theionicstrengt学院专业级学号学院专业级学号姓名 2018-2019学年Fall学期(2)Whatmeasureshavebeentakenustoincreasetheliber[increase[increase[Na+]issolution;ofofhydrogenevolution](4)TheconcentrationofthisNaClsolutionisThepartialorderofAandBis1,respectively.Whentheinitialconmuchlargerthan1.Why?[alot[2][10points]ChlorinamechanismisproposedaChaininitiation:Chainpropagation:Chaintermination:Pleaseanswerthefollowingquestio(1)Writetheexpressionof(2)Writetheexpressionof(3)Writetherelationshipbetweentheapparentactivationenergtherelatedelementaryreacti(4)ItwasfoundthatthequantumyieldofthereactiontakingplaceinCCl4solowerthanthatofthegaseouschlorina(1)Calculatetheratioofreactionrate(k1/k2).(2)Deducetherateequationofthissecond-orderreactionandcalculatek1andk2.conductthisreactionathigherorlowertemperature?Hint:discussThereactionshouldbeperformedathigherThereactionshouldbeperformedathighersolventcage,Cl.iseasytocollideandrecombineeachotherwithoutinitiatinganysecondary(5)Whatisthewavelengthofthelightusedin(a得分阅卷人学院专业级学院专业级学号姓名 2018-2019学年Fall学期