【MOOC】基礎(chǔ)化學(xué)General Chemistry-南京科技職業(yè)學(xué)院 中國大學(xué)慕課MOOC答案

【MOOC】基礎(chǔ)化學(xué)GeneralChemistry-南京科技職業(yè)學(xué)院中國大學(xué)慕課MOOC答案Module1ChemicalBasicKnowledgeTest1、【單選題】Sodiumisametal.Fromthisinformationalone,itmaybededucedthatsodium本題答案：【isaconductorofelectricity.】2、【單選題】AmetalYreactsveryslowlywithwaterbutdecomposessteamatredheat.WhichoneofthefollowingcouldbeY?本題答案：【magnesium】3、【單選題】Whichoneofthefollowingmetalsdoesnotreactwithdilutehydrochloricacidtogivehydrogen?本題答案：【copper】4、【單選題】Whenzincisaddedtoasolutionofametalsulphate,themetalisdepositedandzincionsareproducedinsolution.Themetaldepositedcouldbe本題答案：【copper】5、【單選題】Whichoneofthefollowingoxidesismostreadilyreducedtothemetalbyheatinginastreamofhydrogen?本題答案：【copper(Ⅱ)oxide】6、【單選題】Whichoneofthefollowinggasesisleastcommoninair?本題答案：【hydrogen】7、【單選題】Whichoneofthefollowingsetscontainsthreepollutantsfoundinair?本題答案：【carbonmonoxide,nitrogendioxide,sulphurdioxide】8、【單選題】Whichgasisthemaincauseofdamagetostoneworkonbuildings?本題答案：【sulphurdioxide】9、【單選題】Whichofthefollowingisanexampleofdiffusion?本題答案：【thespreadingofthesmellofflowersinagarden】10、【單選題】Whichpropertyofagasaffectstherateatwhichitspreadsthroughoutalaboratory?本題答案：【molecularmass】11、【單選題】Whichofthefollowingisthebestmethodofobtainingpurewaterfromink?本題答案：【distillation】12、【單選題】Whichoneofthefollowingpairsconsistsofsubstancesthatproduceaprecipitatewhentheiraqueoussolutionsaremixed?本題答案：【sodiumsulphate,bariumchloride.】13、【單選題】WhichoneofthefollowingreactionscouldberepresentedbytheionicequationbelowinwhichMisthesymbolforametallicelement?M(s)+2H+(aq)M2+(aq)+H2(g)本題答案：【iron+dilutehydrochloricacid】14、【單選題】Whichoneofthefollowingcompoundsina1mol/dm3solutionhasthelowestpHvalue?本題答案：【hydrogenchloride】15、【單選題】AnaqueoussolutionofacompoundXwasfoundtoreactwithzincandtoevolvecarbondioxideoncontactwithmarblechips.Xcouldbe本題答案：【hydrogenchloride】16、【單選題】Whichoneofthefollowingformsacolourlesssolutionwhichreactswithaqueoussilvernitrateinthepresenceofdilutenitricacidtogiveayellowprecipitateinsolubleinaqueousammonia?本題答案：【calciumiodide】17、【單選題】Aqueousammoniaisaddedtoasolutionofasalt.Awhiteprecipitateisformedwhichdissolvesinanexcessofaqueousammonia.Whichmetalisinthesalt?本題答案：【zinc】18、【單選題】Whensulphurdioxideisbubbledintoaqueousbrominetheredcolourfades.Sulphurdioxideisactingas本題答案：【areducingagent.】19、【單選題】Whichoneofthefollowingbestdescribeswhathappensduringtheelectrolyticrefiningofcopper?本題答案：【Copperisremovedfromtheanode(+)anddepositedatthecathode(-).Thesolutionremainsblue.】20、【單選題】Lead(Ⅱ)sulphateisbestpreparedbyaddingdilutesulphuricacidto本題答案：【aqueouslead(Ⅱ)nitrate.】Module2ChemicalReactionRateandChemicalEquilibriumTest1、【單選題】本題答案：【】2、【單選題】本題答案：【】3、【單選題】本題答案：【】4、【單選題】本題答案：【】5、【單選題】本題答案：【】6、【多選題】本題答案：【#】7、【多選題】本題答案：【#】8、【判斷題】本題答案：【錯(cuò)誤】9、【判斷題】本題答案：【正確】10、【判斷題】本題答案：【正確】11、【判斷題】本題答案：【錯(cuò)誤】12、【判斷題】本題答案：【正確】13、【判斷題】本題答案：【正確】14、【判斷題】本題答案：【正確】15、【判斷題】本題答案：【正確】16、【判斷題】本題答案：【正確】17、【判斷題】本題答案：【正確】18、【填空題】本題答案：【2645】19、【填空題】本題答案：【211】20、【填空題】本題答案：【412122】ChemicalAnalysisTechniqueTest1、【單選題】Thereis1L0.4mol·L－1Na2CO3solutionwiththeadditionof1.0ml0.1mol·L－1HClsolution.Whichchoicelistedbelowistrue?本題答案：【pHdecrease,dissociationdegreeofCO32-increase.】2、【單選題】TodeterminethecontentofMg2+andCa2+ionsintapwater,inordertokeepthepH=10,whichbuffersystemlistedbelowisthebest?本題答案：【0.1mol·L-1NH3·H2O—0.1mol·L-1NH4Cl(Kb=1.8×10-5)】3、【單選題】Ifyoumixtwosolutionsofequalvolumeineachoptionlistedbelow,whichoptionhasnobufferaction.本題答案：【0.2mol·L-1HCland0.2mol·L-1KCl】4、【單選題】Thereis1L0.1mol·L－1HAcsolutionwiththeadditionof0.5mL0.1mol·L－1NaClsolution.Whichchoicelistedbelowistrue?本題答案：【pHincrease,dissociationdegreeofHAcincrease.】5、【單選題】Whichoptionofthefollowingdeterminesthecapacityofabuffer本題答案：【Buffer-componentratio】6、【單選題】Thebufferrangeofabuffersolutionpreparedbymixing100mL0.2mol·L-1H2Asolutionand100mL0.3mol·L-1NaOHisabout().(pKa1=4.00;pKa2=9.00)本題答案：【3.00～5.00】7、【單選題】Iftwosolutionsaremixedinequalvolumeineachoptionlistedbelow,whichoptionhasnobufferaction?本題答案：【0.2mol·L-1NaOHand0.2mol·L-1KCl】8、【單選題】ToprepareabufferofpH9,whichbuffersystemlistedbelowisthebest?本題答案：【0.1mol·L-1NH3·H2O—0.1mol·L-1NH4Cl(pKb=4.75)】9、【單選題】Howmanygramsofpotassiumhydrogenphthalate(KHC8H4O4)primarystandardsubstancearerequiredtostandardizeabout25mLof0.1mol·L-1NaOHsolution?()[Mr(KHC8H4O4)＝204g·mol-1]本題答案：【0.5100g】10、【單選題】Whichsubstancecanuseasstrongbaseinglacialaceticacid本題答案：【NH3】11、【單選題】pHofsolutioninwhich0.2mol·L－1H3PO4solutionand0.2mol·L－1Na3PO4solutionaremixedinthesamevolumeis?(Ka1=7.5×10-3,Ka2=6.3×10-8,Ka3=2.2×10-13)本題答案：【7.21】12、【單選題】Thecolorofthesolutionisyellowwiththeadditionofmethylorangeindicatorandredwiththeadditionofmethylred.InordertokeepthepHofthesolutionstable,whichbuffersystemlistedbelowisthebest?本題答案：【0.1mol·L-1HAc—0.1mol·L-1NaAc(pKa=4.75)】13、【單選題】ToprepareabufferofpH10.5,whichbuffersystemlistedbelowisthebest?本題答案：【CH3NH2·HCl—CH3NH2(pKa=10.65)】14、【單選題】Whichisnotconjugateacid-basepairinthefollowingacid-basepair?本題答案：【H2SO4-SO42-】15、【單選題】whichchangeisanexampleofoxidation?本題答案：【chlorideiconstochlorineatoms】16、【單選題】Whichofthefollowingisthebestmethodofobtainingpurewaterfromink?本題答案：【distillation】17、【單選題】Achlorideion,Cl-hasthesametotalnumberofelectronsas本題答案：【anargonatom,Ar】18、【單選題】Whichoneofthefollowingfactsbestsuggestthatcopperisatransitionmetal?本題答案：【Copperdoesnotreactwithhydrochloricacid】19、【單選題】12gofmagnesiumareaddedto200gofhydrochloricacidwhichisinexcess.Thetotalmassofthemixtureleftwhenthereactioniscompleteis本題答案：【211g】20、【單選題】Whichofthefollowingchangesisanexampleofreduction?本題答案：【nitrogenmoleculestoammoniamolecules】Module4OrganicCompoundsTest1、【單選題】Theproductofthefollowingreactionis----------()本題答案：【】2、【單選題】2.WhichcanmakeBr2/CCl4solutioncolorless,whilecan’tmakeKMnO4solutioncolorlessinthefollowingcompouds?--------（）本題答案：【】3、【單選題】本題答案：【】4、【單選題】本題答案：【】5、【單選題】本題答案：【】6、【單選題】Whichreagentcanoxideethylbenzenetobebenzoicacid----（）本題答案：【K2Cr2O7/酸】7、【單選題】Whichcompoundhasthebiggestsolubilityinwater-----()本題答案：【】8、【單選題】Whichhascis-andtrans-structureinthefollowingcompound？--------（）本題答案：【CH3CH2CH=CHCH3】9、【單選題】Whichconditioncanoxidize2-methyl-2-pentenetobepropanalandpropanone?-