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无机及分析化学实验(双语)智慧树知到期末考试答案+章节答案2024年浙江大学StandardcurvemethodisusedtomeasureFcontentinteasamples.Thepotentialofthesamplesolutionshouldbemeasuredtwice.()
答案:错Starchsolutionisusedastheindicatoriniodometry(碘量法)()
答案:对pHrangeofanindicatorshouldfallwithinthetitrationjump.()
答案:对ThefullnameofTISABistotalionicstrengthadjustmentbutter.()
答案:错Chemicalanalysishashighaccuracy,soitissuitablefortraceanalysis()
答案:错Instrumentalanalysis(仪器分析)issuitablefortraceanalysis.()
答案:对Inbacktitrations,atleasttwochemicalreactionsareinvolved.()
答案:对Argentometry(银量法)isanimportantmethodofcomplexationtitrations.()
答案:错Duetoitslowpolarity(极性),K3[Fe(C2O4)3]·3H2Owouldcrystallizemoreeasilyafteraddingethanol(乙醇).()
答案:错StandardcurvemethodandstandardadditionmethodareusedtodetermineFinteasamples.Standardcurvemethodhaslargemeasurementerrorsforcomplicatedsamples.()
答案:对Citricacid(柠檬酸)usedinthemeasurementofFcontentinteasamplesistopreventtheinterferencefromAl3+andFe3+.()
答案:对Coppermethionine(蛋氨酸铜)canbeusedasnutritionaladditives.()
答案:对Comparedwithstandardcurvemethod,standardadditionmethodissuitableforunknownorcomplicatedsamples.()
答案:对Indicatorsforcomplexationtitrationsarealsocalledmembraneindicators.()
答案:错Themorethedissociatedions,thehigherthemolarconductivity(摩尔电导率).()
答案:对StandardcurvemethodandstandardadditionmethodareusedtodetermineFintea.Whichofthefollowingstatementsaboutstandardcurvemethodarecorrect?()。
答案:suitableforsimplesamples###simplecalculationsWhichareagainstthelabsafetyrequirements?()
答案:Longhairisnottiedback(挽起来)###Safetygogglesisforgottobring###Wearcontactlens(隐性眼镜)Whichofthefollowingstatementsaboutanamphotericsubstances(两性物质)arecorrect?()。
答案:Aluminumisanamphotericsubstance###SubstanceactbothasanacidandasabaseaccordingtoBrønsted-LowryTheory.###WaterisatypicalamphotericsubstanceWhichactionsareNOTtrueforthelabnote-book?()
答案:Tearapageout(撕页)###Changethedataortheobservations###Makeup(伪造)thedataortheobservations###Erase(擦去)thelaboratoryrecordThereasonswhyusingbacktitrationtodetermineAlcontentincement(水泥)are()
答案:Thereisnosuitableindicator###AlreactswithEDTAslowlyWhichofthefollowingsarethemaincomponentofsuctionfiltration?()
答案:Buchnerfunnel###Vacuumpump###FilterflaskWhichofthefollowinganionshasnooxidizingorreducingproperties?()
答案:SO42###CO32Molarabsorptivity(摩尔吸光系数)ofasubstancedoesnotchangewith()
答案:concentration###passinglengthoflight(光程)Thequantitativedeterminationconditionsofspectrophotometricanalysisare()
答案:Absorption(0.2-0.8)###monochromaticlight(单色光)###dilutesolutionWhichstatementsaboutcoppermethionine(蛋氨酸铜)arecorrect?()
答案:Ithaslowpolarity(极性)###Ithaslowsolubility(溶解度)Themainsourcesofdeterminationerroriniodometricmethod(碘量法)are()
答案:oxidizationofiodide###volatilizationofiodine(I2)Whichofthefollowingstatementsaboutinstrumentalanalysis(仪器分析)arecorrect?()
答案:lowaccuracy###highsensitivityWhichofthefollowingscannotbeusedtotransfertheremainingalum(明矾)crystalinthebeakertotheBuchnerfunnel?()
答案:deionizedwater###solventThreekindsofargentometry(银量法)are…()
答案:Mohrmethod###Fajansmethod###VolhardmethodIon-exchangetechniqueandMohrmethodareusedtodeterminethechargenumberofK3[Fe(C2O4)3]·3H2O.Whichstatementsarecorrectinthisexperiment?()
答案:theresinturnsgreenafterion-exchanging.###Anion(阴离子)exchangeresinisused.WhatmethodisusedtodetermineSiO2contentincement(水泥)experiment?()
答案:gravimetricanalysisWhichofthefollowingdescriptionaboutheteropolyoxo(杂多酸)iscorrect?()。
答案:Heteropolyoxoanionsdisplaynotableoxidizingproperties.FortheK5(杂多酸)product,whichofthefollowingiscorrect?()。
答案:StrongoxidizabilityTheindicatorinMohrmethodis()
答案:K2CrO4Generallythecrystalsisformedfrom…….()。
答案:saturatedsolutionTheaimofperformingtitrationforatleast3timesistoreduce…()。
答案:randomerrorWhichofthefollowingdescriptionaboutcatalystiscorrect?()。
答案:ThecatalystscanlowertheactivationenergyofchemicalreactionsWhichstatementabouttheconditionsofMohrmethodiswrong?()
答案:AdjustthepHofsolutionto1-3WhichreagentscanbeusedtoidentifyFe3+?()。
答案:KSCNHowtoprepare(3+50)HClsolution?()
答案:mix3mLofconcentratedhydrochloricacid(HCl)with50mLofH2OIngravimetricanalysis(重量分析),thereasonwhythesameanalyticalbalanceisusedtoweighthecrucible(坩埚)is()
答案:toreducethesystemerrorWhichnumberhas4significantfigures(有效数字)?()。
答案:0.935Whichcompoundsisgrey-green?()。
答案:Cu2[Fe(CN)6]IntheprocessofKMnO4standardization(标定),thevalencestate(价态)ofMnelementis….()。
答案:from+7to+2Whichofthefollowinganionscanreactwithdiluteacidtoreleasearottenegg-smellinggasandturnleadacetatepaper(乙酸铅试纸)black?()
答案:S2WhichstatementaboutthislabcourseisNOTcorrect?()
答案:OperateanunknowninstrumentwithoutpermissionArrhenius’lawisabout……()。
答案:therelationbetweentherateconstantandtemperatureAfteraddingsomesulphosalicylicacid(磺基水杨酸),solutionturns….
答案:purplishred25.0mLof0.10mol/LNa2C2O4solutionisplacedinatitrationflask.0.038mol/LKMnO4isrunfromaburetteintothetitrationflask.Toensurethatthereactiontakesplaceatasuitablerate,Na2C2O4solutionwasheatedtonearly60°cahead.Whichindicatoristhemostsuitableforthistitration?()。
答案:KMnO4(asself-indicator)Whichofthefollowingstatementaboutactivationenergy(活化能)iscorrect?()。
答案:Itistheminimumamountofenergyneededforareactiontooccur.Whichofthefollowingsarefactorsthataffectthestabilityofheteropolyacids(杂多酸)()。
答案:Thetemperatureofthesystem###ThepHofthesolutionK5CoW12O40isusedasacatalystinorganicsynthesis.()
答案:对K5CoW12O40hasthepotentialtooxidizesomereductivereagents.()
答案:对Whatisthepurposeofaddingpotassiumpersulfate(K2S2O8)totheK6solution?()
答案:TooxidizecobaltionsWhatisthenameofthestructuralunitofpotassiumcobaltheteropolytungstate(杂多酸)?()
答案:KegginanionWhichmethodcanbeusedtomeasurethedegreeofdissociation(解离度)ofthecoloredcomplex?()
答案:ContinuousvariationsmethodWhichapparatushavebeenusedtopreparethemedicinesolution?()
答案:glassfunnel###analyticalbalance###volumetricflask(容量瓶)Whatkindofblanksolutionscanbeusedwhenreagent,analyteandchromogenicreagent(显色剂)arecolorless?()
答案:solventblank(溶剂空白)Thepartofaspectrophotometerthatselectsthewavelengthoflightusedtoirradiatethesampleiscalledthe()
答案:monochromatorThefunctionofNH2OH·HClis…()
答案:toreduceFe3+toFe2+HowtoobtaintheoptimalpHrange?()
答案:firstplotanA-pHcurve###thenfindthepHrangewheretheabsorbanceismaximumandstableWhatwillhappenifMgOcontentincement(水泥)istoohigh?()
答案:makethecementunstableWhatmethodisusedtodetermineSiO2contentinthisexperiment?()
答案:gravimetricanalysisThequalityofcementrelatestothenationaleconomyandthepeople'slivelihood.()
答案:对Whataretheadvantagesofgravimetricanalysis?()
答案:donotneedprimarystandard###highaccuracyWhichoffollowingmethodsareusedtodetermineCaOcontent?()
答案:complexationtitration###directtitrationCo(III)ismorestableinsimplesaltsthanCo(II).()
答案:错ThefunctionsofH2O2are()
答案:anoxidant###tomakeCo2+toCo3+Whichofthefollowinginstrumentcanbeusedtodeterminethecrystalfieldsplittingenergy(晶体场分裂能)ofthecobaltammines?()
答案:spectrophotometerWhichofthefollowingstatementsaboutSwisschemistWernerarecorrect?()
答案:HewonthefirstNobelPrizeforInorganicChemistry.###Heproposedoctahedralandsquareplanararrangementofligandsincobaltammines###Heproposedthetheoryofcoordinationcompounds.###Heisknownastheforerunnertomoderninorganicchemistry.WhichofthefollowingstatementabouttheprinciplesofCodeterminationinproductsistrue?()
答案:productsdecomposeinhotandstrongbasesystem.Theadvantagesofautomaticpotentiometrictitratorsare…()
答案:Wideapplications###Highaccuracy###Highsensitivity###AvailableautomationWhichonecannotbeusedtodeterminethepurityofproducts?()
答案:Redoxtitration(氧化还原滴定法)WhichoneshouldbeaddedinbatcheswhenpreparingNaH2PO4·2H2O?()。
答案:Na2CO3Inthisexperiment,someethanol(乙醇)isaddedtoincreasethesolubilityoftheproducts.()
答案:错Whichofthefollowingsolutionsarealkaline(碱性)?()
答案:Na3PO4•12H2O###Na2HPO4•12H2OPreliminarytestsofanionsmainlyincludevolatilitytest,precipitationtestandredoxtest.()
答案:对Whichsilversaltsareinsolubleinwater?()
答案:S2###Cl###BrWhichofthefollowinganioncanreactwithdiluteacidtoreleaseanodorlessgas,makinglimewater(石灰水)cloudy?()
答案:CO32Tapwatercanbeusedintheseparationandidentificationofanions.()
答案:错Whichofthefollowinganionhasnooxidizingorreducingproperty?()
答案:SO42Thetwobasesinthetwoacidsandtwobasesmethodofanalysisare()。
答案:NaOH###NH3·H2OThetwoacidsinthetwoacidsandtwobasesmethodofanalysisare().
答案:HCl###H2SO4Whichofthefollowingisnotanobviousphenomenonofionidentificationreaction?()
答案:TemperaturechangeDuringcationanalysis,methodstoeliminateinterferingionsinclude().
答案:AlloptionalWhichsulfates(硫酸盐)areeasilysolubleinwater?()
答案:Fe3+###Ni2+Becausecoppermethionine(蛋氨酸铜)issolubleinwater,usewatertotransfertheproductremaininginthebeakerwhenperformingsuctionfiltration(减压过滤).()
答案:错Whichofthefollowingstatementsaboutcoppermethionine(蛋氨酸铜)arecorrect?()
答案:acomplexcompound###achelate###widelyusedinfeedandfoodindustryWhyshouldtemperatureandacidity(酸度)becontrolledwhenpreparingcoppermethionine(蛋氨酸铜)?()
答案:Iftheacidityislower,copperionwouldformprecipitate(沉淀).###Ifthetemperatureishigher,methioninewouldbedecomposed.Whichmethodisusedtodeterminethemethionine(蛋氨酸)contentincoppermethionineinthisexperiment?()
答案:redoxtitrationWhichmethodisusedtodeterminetheCucontentincoppermethionineinthisexperiment?()
答案:complexationtitrationWhenadjustingtheacidityofsolution,addsomeK2C2O4solutionifthepHislow.()
答案:对Whichstepismostimportant?()
答案:oxidationofFeC2O4WhatshoulddoifsomeyellowFeC2O4solidleft?()
答案:addmoreH2O2WhichofthefollowingstatementsrelatedtothepreparationofstandardAgNO3solutionarecorrect?()
答案:AgNO3shouldbeweighedoutbyananalyticalbalance###Thevolumetricflask(容量瓶)isbrown###AlltheglasswareshouldbecleanandfreeofClAfterirradiation(光照),whatshouldbeusedtowashthecyanotypephoto?()
答案:H2O2###tapwater(自来水)ThepotentialhaslinearrelationshipwiththeconcentrationofFbeforeaddingTISAB.()
答案:错Whichprocedurescanobtainastandardcurve?()
答案:plotanE-pFcurve###preparestandardsolutions.###measurethepotentialofstandardsolutions.Whichoneisnottheadvantageofstandardcurvemethod?()
答案:suitableforthemeasurementsofcomplicatesamples.Whichofthefollowingstatementsaboutstandardadditionmethodarecorrect?()
答案:theconcentrationofstandardsolutionishigh.###theaddedvolumeofstandardsolutionissmall.Whichofthefollowingstatementaboution-selectiveelectrodesisNOTtrue?()
答案:Theyarealsocalledmetalelectrodes.TheArrhenius’equationdescribestherelationshipbetweenrateconstantand()。
答案:temperatureThereactionbetweenKIandK2S2O8isahomogeneous(均相)reaction.()
答案:对Inanelementalreaction(基元反应),howmanytransitionstateswillbe()。
答案:1Whichofthefollowingsarefactorsthataffecttherateofachemicalreaction()。
答案:thecatalystofthereaction###theconcentrationofthereactants###thetemperatureofthesystemThecatalystinthisexperimentcanshortenthereactiontime.()
答案:对Ferrousammoniumsulfate(硫酸亚铁铵)isoxidizedbyKMnO4inacidicmedium.()
答案:对Whatisthecolorchangeattheendpointoftheredoxtitrationofferrousammoniumsulfate(硫酸亚铁铵)()
答案:FromcolorlesstopinkWhatisthepurposeofaddingsulfuricacid(硫酸)totheferrousammoniumsulfate(硫酸亚铁铵)solutionbeforetitration?()
答案:Topreventtheoxidationofiron(II)toiron(III)Whatisthecolorofferrousammoniumsulfate(硫酸亚铁铵)crystals?()
答案:GreenWhatisthecommonnameofferrousammoniumsulfate(硫酸亚铁铵)?()
答案:Mohr'ssaltWhichofthefollowingsaretypesofchemicalreactionsinvolvedinthesynthesisofalum(明矾)()。
答案:Oxidation-reduction###Acid-base###PrecipitationAlum(明矾)canbeusedas…()。
答案:amordantindyeing###acoagulantinwatertreatmentWhichofthefollowingispropertyofalum(明矾)?()
答案:ItcanreactwithNaOHsolutiontogenerateH2Ingeneral,thesolubilityofdoublesaltsishigherthanthatofthesimplesaltsofitsconstituents?()
答案:错ThereactionbetweenAlfoilandNaOHisatypicalredoxreaction(氧化还原反应).()
答案:对Whichoneisnottherequirementforthereactionssuitablefordirecttitrations?()
答案:therearesidereactionsTheindicators
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