sat2化学包历年真题及答案20122号卷

Note:Forallquestionsinvolvingsolutions,assumethatthesolventiswaterunlessotherwisestated.Throughoutthetestthefollowingsymbolshavethedefinitionsspecifiedunlessotherwisenoted.H=enthalpyM=molarn=numberofmolesP=pressureR=molargasS=T=temperatureV=volumeatm=atmosphere(s)g=gram(s)J=joulekJ=kilojoule(s)L=liter(s)mL=milliliter(s)mm=millimeter(s)mol=mole(s)V=1PAGEPAGE2PartDirections:Eachsetofletteredchoicesbelowreferstothenumberedstatementsorquestionsimmediayfollowingit.Selecttheoneletteredchoicethatbestfitseachstatementoranswerseachquestionaridthenfillinthecorrespondingcircleontheanswersheet.Achoicemaybeusedonce,morethanonce,ornotatallineachset.因部分题⽬残缺或超纲，此卷共删去9因部分题⽬残缺或超纲，此卷共删去9题，所以做题时间相应缩短为52PAGEPAGE3Questions1-3refertothefollowingTheelementthatismostactiveTheelementwiththesmallestionicTheelementwiththelowestfirstionization4͘TheȴHofthereactiontoformCOfromC+5͘TheȴHofƚheƌeacƚionƚofoƌmCO2from+TheΔHofthereactiontoformCO2fromC+O2169TheatomicnumberofanatomwithanelectrondotarrangementsimilartoThenumberofatomsrepresentedintheformulaNa2CO3

Questions9-12refertotheA0.01-molarsolutionofA0.01-molarsolutionofA0.01-molarsolutionofA0.01-molarsolutionofA0.01-molarsolutionofWillbecoloredWillhaveapHofWillhavethe zingWillcontainundissociatedaqueousQuestions13-16refertotheHas7valence HasthesameelectronconfigurationasaneonatomHasvalenceelectronsinTheelectronconfigurationforpotassiuminthegroundstateTheelectronconfigurationforthenoblegaswiththehighestfirstionizationenergySolidtoGastosolidQuestions21-22q=q= P1V1=D=m/K=C+BoLJle͛ƐUsedtofindenergygainedorlostduringaparticularphasechange.AlphaBeta HasthegreatestHasthegreatestpositivePartsheet.FillincircleCEonlyifstatementIIisacorrect nationofthetruestatementDirections:Eachquestionbelowconsistsoftwostatements,lintheleft-handcolumnandIIintheright-handcolumn.Foreachquestion,determinewhetherstatementIistrueorfalseandwhethersheet.FillincircleCEonlyifstatementIIisacorrect nationofthetruestatementIThedoubleandsinglebondsinbenzenearesubjecttoresonanceWhentheѐGofareactionatagiventemperatureisnegative,the AsolutionwithapHof5islessacidicthanasolutionwithapHof8Whenanatomabsorbsaphotonofvisiblelight,oneofitselectronsispromotedtoahigherenergystateAvoltaiccellchemicalenergyintoelectricalenergyBrominehasanatomicmassof79.9NH3canbestbecollectedbywaterAddingmorereactantswillspeedupareactionHeliumwillhavefewerdispersionsbetweenitsatomsthantheothernoblegasesAnendothermicreactioncanbespontaneous

benzenehasdelocalizedpielectronsthatstabilizeitswhenѐGisnegative,ѐHasolutionwithapHof5has1,000timesmorehydroniumionsthanthesolutionwithapHof8.anelectronhasanegativeavoltaiccellneedsanexternallyappliedcurrenttoabout50%ofallbromineatomsare79Brandtheother50%are81Br.NH3isapolarthereactantswillcollidelessasthemassofnonpolaratomsandmoleculesincreases,dispersionsboththeenthalpyandtheentropychangesaffecttheGibbs-energychangethereaction. 13Cand 14C Asaturatedsolutionisnotnecessarilyconcentrated 114.When2litersofoxygengasreactwith2liters114.When2litersofoxygengasreactwith2litersofhydrogencompley,thelimitingfactoristhevolumeoftheoxygen115.Anonpolarmoleculecanhavepolarbonds

isotopesofanelementhavethesamenumberofprotonsinthenucleusbuthaveadifferentnumberofdiluteandconcentratedaretermsthatrelateonlytotherelativeamountofsolutedissolvedinthesolvent. equationsofgaseousreactionsgthevolumerelationshipsoftheenvolved equationsofgaseousreactionsgthevolumerelationshipsoftheenvolvedpolarbondscanbesymmetricallyarrangedinamoleculesothattherearenonetpoles.PartDirections:Eachofthequestionsor pletestatementsbelowisfollowedbyfivesuggestedanswersorcompletions.Selecttheonethatisbestineacheaseandthenfillinthecorrespondingcircleontheanswersheet.When2molofH2S(g)reactwithanexcessofoxygenaccordingtotheequationabove,howmuchH2O(g)isproduced?(Equationisnotbalanced.)12346Fortheradioactiveatom99Tc,whatisthecorrectnumberofprotonsand43protonsand5643protonsand9956protonsand4356protonsand99CannotbeThenumberofelectronsin118Sn22Questions28refertoamoleculeof2-butyne,CH3-C൙C-Howmanyatomslieinastraightlineinthis8642Whichbond(s)is(are)IIIIIandIIIIandIIII,II,andAnexampleofaphysicalpropertylowmeltinghighheatofIntheelectrolysisofwater,thecathodereductionreaction2H2O(I)+2e-їH2(g)+2OH-2H++2e-їThetwomostimportantconsiderationsindecidingwhetherareactionwilloccurspontaneouslyarethestabilityandstateofthetheenergygainedandtheheatanegaƚiǀeǀalƵefoƌȴHandapiieǀalƵefoƌapiieǀalƵefoƌȴHandanegaƚiǀeǀalƵefoƌtheendothermicenergyandthestructureoftheAsolutionthathaspHof6.0slightlyslightlyWhichprocesswouldhaveapositivevalueforthechangeinTheexpansionoftheThecondensationofaAfoodfightinaschoolIIIIandIIIIandIIIOfthefollowingsolutions,whichoneisexpectedtobetheweakestWhichamountofPb(NO3)2,whenaddedtoenoughwatertomake1literofsolution,willproduceasolutionwithamolarityof1.0A/?1443313170.0030.5Whatisthemass-actionexpressionforthefollowingreactionat

22

3232

WhichK.,valueisthatofabetter1.0x10-2.0x10-5.0x10-3.0x10-FactorsthatinfluencewhetherornottwocollidingmoleculeswillreactincludewhichoftheTheenergyoftheTheorientationoftheThesizedifferencebetweenthereactantandproductIIIIlandIIIandIIII,II,andWhichofthefollowingsolidsareknowntoundergoIIIIandIIIIandIIII,II,andWhaƚiƐƚheǀalƵeofAHfoƌƚheƌeacƚion͗XнϮYї(A)-550(B)+50(C)-50(D)-350(E)+250Whatisthecorrectmass-actionexpressionforthereaction2NO(g)+Cl2;gͿіїNOCl

2NOCl 2

NOCl NOCl2

222NOCl 2

222 2ϰϯ͘TheeqƵilibƌiƵmconƐƚanƚedžpƌeƐƐionfoƌƚheƌeacƚion͗ϮA;gͿнB;gͿіїϯC;ƐͿнϮD;gͿiƐwritten22

2K 2

(D)

22KK

WhichreactionbelowdemonstratestheLewisdefinitionofacidsand4H2O+HїOH1-+NH4NH3+HIнKOHїH2O+H++OH1-2H+3H 1n+ Themissingproductinthenuclearreactionrepresentedabove11H123224234333From2molesofKClO3howmanylitersofO2canbeproducedatSTPby positionofalltheKClO3?(E)(E)47.ThelabsetupshownabovewasusedfortheysisoftheempiricalformulaMgO.InsynthesizingMgOfromaMgstripinthecrucible,whichoffollowingisNOTTheinitialstripofMgshouldbeThelidofthecrucibleshouldfittightlytoexcludeTheheatingofthecoveredcrucibleshouldcontinueuntiltheMgisfullyThecrucible,lid,andthecontentsshouldbecooledtoroomtemperaturebemeasuringtheirmass.WhentheMgappearstobefullyreacted,thecruciblelidshouldbepartiallyremoved WhatisthepHofasolutionwithahydroxideionconcentrationof0.00001mole--59WhatisthepOHofasolutionthathas0.00001moleofH3O+/literof23459Whichofthefollowingelectronconfigurationsrepresentsanatomofmagnesiuminanexcitedstate?Whatisthemass,ingrams,of1moleofKAI(SO4)2ͻAnunknownacidsolutionwaspresumedtobeeitherHCIorH2SO4.WhichoneofthefollowingsaltsolutionswouldproduceaprecipitatewhenaddedtoH2SO4butnotwhenaddedtoHCI?HowmanymolesofCaOareneededtoreactwithanexcessofwatertoformThecorrectformulaforcalciumhydrogensulfateWhatisthemolarmassof687582100116Givena22.4-litersampleofheliumgasisatSTP.Ifthetemperatureisincreasedby15degreesCelsiusandthepressurechangedto600torr,whatwouldthenewvolumeofthegassamplebe?

Howmanylitersofoxygen(STP)canbepreparedfromthe positionof21gramsofsodiumchlorate(1mol=106g)?Questions58refertothefollowingWhycouldyouNOTusethissetupforpreparingH2ifthegeneratorcontainedHydrogenwouldnotbeThesetupofthegeneratorisThegeneratormustbeheatedwithaThedeliverytubesetupisThegascannotbecollectedoverBasedontheinformationshown,eachofthefollowingequationsrepresentsareactioninwhichthechangeinentropy,ѐS,ispositiveEXCEPTCaCO3;ƐͿїCa;Ϳн2C2H6(g)+7O2;gͿїϰCO2(g)+NaCl;ƐͿїNa+(aq)+Cl-A16-gramsampleofwaterat273Kiscooledsothatit esacompleysolidicecubeat273K.Howmuchheatwasreleasedbythesampleofwatertoformthisicecube? 18,258350OnemoleofanidealgasatSTPhasitstemperaturechangedto15°Canditspressurechangedto700torr.Whatisthenewvolumeofthisgas?760torr22.4L288

273K700 273K700 760torr22.4L288760torr22.4L273288K700700torr22.4L287273K760760torr1.0L288273K700WhichofthefollowingstatementsaboutsolubilityisGasesdecreaseinsolubilitywithanincreaseinNaClisinsolubleinPbI2issolubleinAllnitratesareinsolubleinSolubilitydependssolelyupontheamountofsolventWhichofthefollowingsituationsdemonstrate(s)anincreaseinDissolvingasaltintoHeatingupaIIandIIIIandIIIIandIIII,II,andQuestions64refertothevoltaiccellbelowinFigureWhatisthehalfreactionthatoccursatthe NiN++Thevolumeofthedryhydrogengasat1atmandroomtemperaturewould25.2749.8

25.2760

25.2749.819.8749.8760AsolutionhasapHof6.0.WhatistheconcentrationofOH1-ion