高二学生下学期学习计划化学Sophomore students study plan chemistry next semester 02 23.docx
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高二学生下学期学习计划化学Sophomore students study plan chemistry next semester 02 23.docx
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高二学生下学期学习计划化学Sophomorestudentsstudyplanchemistrynextsemester0223
高二学生下学期学习计划化学02月23日(Sophomorestudentsstudyplanchemistrynextsemester,02,23)
TheZhangBeistudyprogramissharedeveryday
Case
(1),500
(2),C(3),10,CD,C(4),small,noinfluence
11.,intheofficeorinthelivingroom,inabeautifulvasewithabunchofbeautifulflowers,willgivethenervousandbusywork,lifebringsrelaxedandcheerfulmood.Ifyouaddafreshflowerpreservativetothevase,itwillextendthelifeoftheflower.Thefollowingistheingredientsfor1L"flowerpreservative".Afterreading,answerthefollowingquestions:
component
Mass/g
Themolarmass(g/Mol1)
sucrose
Fifty
Threehundredandtwelve
Potassiumsulphate
Zeropointfivezero
Onehundredandseventy-four
Aspirin
Zeropointthreefive
Onehundredandeighty
potassiumpermanganate
Zeropointfivezero
Onehundredandfifty-eight
silvernitrate
Zeropointzerofour
Onehundredandseventy
(1)"flowerantistalingagent"intheamountofsubstanceconcentrationofthelargestcomponentis________(name).
(2)thecontentofK+in"flowerpreservative"is(aspirincontainsnoK+)
________mol.L-1(justwriteanexpressionanddon'tneedtocomputeit).
(3)duringthepreparationprocess,thefollowingisthe________doesnotaffecttheresultofpreparation(fill).
TheA.volumetricflaskisnotdriedbeforeuseandcontainsasmallamountofdistilledwater
LookuptheliquidlevelwhentheB.isfixed
C.capacitybottle,beforeuse,justfinishedtheconcentrationofacertainamountofsubstanceNaClsolution,butnotwashed
WhentheD.isfixedandshaken,theliquidlevelislowerthanthecalibrationlineofthecapacitybottle,butnotreatmentisdone
(4)todeterminetheconcentrationoffreshflowerantistalingagent"silvernitrate,shouldcontain________reagentaddedin(fillingchemicalsymbol).
Analysis
(1)calculatedaccordingtotheformula:
C=n/V.
(2)tocalculatetheconcentrationofpotassiumsulfateandPotassiumPermanganate,youcanfindtheC(K).(3)AdidnotaffectB;constantvolumeuptolevelsolutionvolume,theconcentrationofNaClsolutionissmall;theCcanreactwithsilvernitrate;theDlevelislowerthanthescalelinecapacityofbottlethatpartofresidualliquidinthebottlemouthandthewall,thendonothandle.
Answer
(1)sucrose
(2)+2*(3)AD(4)Cl
One
Fourthunitoxidation-reductionreaction
First,themultiple-choicequestion
1.oxidationreductionreactionsarewidelyusedinproductionandlife.Thefollowingexamplesofproductionandlifedonotcontainredoxreactions.
A.metalsmelting,B.settingofffirecrackers,C.foodspoilage,D.pointtofu
Analysisoftofupointsystembelongstotheaccumulationofcolloid,isaphysicalchange.
AnswerD
2.known:
KMnO4crystaltoaddconcentratedhydrochloricacidtoproduceyellowgreengas;gastotheFeCl2solutionintoalargenumberofexperimentsofthesolutiontakesyellow;experimentIIgenerationsolutiondropsinKIcontainingstarch,litmusblue.Thefollowingistrue().
TheexperimentprovedthatA.oxidation:
MnO+I2>Cl2>>
B.intheaboveexperiments,therearetworedoxreactions
ThegasproducedbyC.experimentcannotmakethemoiststarchKItestpaperblue
D.experimentprovedthatbothoxidationandReductionReduction
Accordingtotheproblemofanalyticknowledgegeneratedinchlorine,ClisoxidizedtoCl2,KMnO4asoxidant,Cl2asoxidationproducts.FeCl2wasoxidizedtoFeCl3byCl2,andIwasoxidizedbyFeCl3toformI2.Accordingtotheredoxreactionrules:
oxidation:
MnO>Cl2>Fe3>I2+A,right;thethreereactionisaredoxreaction,theoxidationofKIandCl2canalsogenerateI2,theexperimentonlyshowsthatFe2+reduction.
AnswerA
The3.knownCo2O3inacidicsolutioniseasilyreducedtocobaltions,oxidativeCo2O3,Cl2,FeCl3andI2decreasedinturn.Thefollowingreactionsthatareunlikelytooccurinaqueoussolutionsare()
A.3Cl26FeI2===2FeCl34FeI3
B.Cl2FeI2===FeCl2I2
C.Co2O36HCl===2CoCl2Cl2=3H2O
D.2Fe32I===2Fe2I2
Analysisofthetesttodeterminethestrengthofusingoxidativereaction,oxidationofCo2O3,Cl2,theFeCl3,I2isattenuated,soCl2Fe2canbeoxidizedtoFe3+andI-+andI2,andICo2O3canbeoxidized,CloxidationofCl2,Fe3+IcanbeoxidationgenerateI2,soAisnotcorrect.
AnswerA
4.,IknownSO2,Cl-,Fe2+,H2O2werereducedinacidicsolution,reducingthestrengthoftheorderofCl A.2Fe3SO22H2O===2Fe2SO4H B.I2SO22H2O===H2SO42HI C.H2O2H2SO4===SO2hav'eO2hav'e2H2O D.2Fe32I===2Fe2I2 Analysisoftheproblemcanbesolvedbyreversethinking, IfAcanoccur,whilereducingSO2>Fe2+,todo;ifBcanoccur,whilereducingSO2>I,todo;ifCcanoccur,whilereducingH2O2,SO2,andthetitletorestorethesequenceofnumberdoesnotmatch,sotheCreactioncanoccurifDcanoccur;then,reducingI,Fe2+,withtheir. AnswerC 5.LiAlH4isakindofmetalhydrogenstoragematerialandacommonreagentinorganicsynthesis.Whenhydrogenreactswithwater,itreleaseshydrogengas,andLiAlH4decomposesintoLiH,H2andAlat125DEGC.Thefollowingstatementiswrong() A.LiAlH4andacetaldehydeactasethanolandLiAlH4asreducingagent B.LiAlH4andD2Oreaction,molarmassofhydrogenfromthe4g-Mol1 C.1molLiAlH4completelydecomposesat125DEGCandtransfers3molelectrons ThereactionofD.LiAlH4withwatertogeneratethreekindsofsubstances,thechemicalequationcanbeexpressedas: LiAlH44H2O===Al(OH)3LiOH4H2hav'e ExplicitanalyticalLiAlH41priceofhydrogen,withstrongreducibility;A,acetaldehyde,ethanol,reducingreaction,correct;B,essenceofthehydrogenisLiAlH41HandD2Oprice+1valenceDtogenerateHDgas,themolarmassis3G-mol1,C,Al3+error;generateAl,transfer3E,D,right;thereactionisequivalenttothehydrolysisofAl(OH)3solubleinacidandalkaliinsolubleinwater,LiOHisalkali,insoluble,right. AnswerB 6.theefficientwatertreatmentagentClO2waspreparedinthelaboratorybythefollowingreaction: 2KClO3+H2C2O4+ H2SO4===2ClO2=K2SO42CO2=2H2O,whichofthefollowingstatementsisnottrue() A.CO2istheproductofoxidation TheB.1molKClO3participatedinthereactionwithanelectrontransferof1mol C.KClO3isoxidizedinthereaction ThereducibilityofD.H2C2O4isstrongerthanthatofClO2 Intheanalyticreaction,theClelementischangedfrom+5(KClO3)to+4(ClO2),andtheCelementischangedfrom+3(H2C2O4)to+4(CO2),soCO2istheproductofoxidation,andClO2istheproductofreduction.KClO3isusedasanoxidantandisreducedinthereaction. AnswerC Thereactionoccurredin7.Na2SsolutionwasaddeddropwisetotheamountofsubstanceconcentrationofFeCl3solution,Na2Ssolution: 2Fe3S2===2Fe2Sdown;concentrationofFeCl3solutionwasaddeddropwiseandothersubstancesinthereaction: 2Fe33S2===Fe2S3down.Thefollowingstatementiswrong(). A.Fe3intheacidicenvironmentofstrongoxidationresistance B.S2strongreductioninalkalineenvironment ThesolubilityofFe(OH)3islargerthanthatofC.atthesametemperatureofFe2S3 D.intoFeCl3solutionintoH2S,thereissulfurprecipitation TheanalyticalsolutionofFeCl3Na2Sisacidic,alkalinesolution,reactionoftheformerinthequestionintheacidsolutionreaction,whichshowedthatAandDcorrectly;thelatterreactioninalkalinesolution,generatingmoreinsolubleFe2S3,Berror,C. AnswerB Two.Nonchoicequestions 8.undertheconditionofhightemperature,chalcocite(themaincomponentofCu2S)throughtheamountofaircanbesmeltmetalcopper,throughaseriesofreactionscanbeBandD,E.Gisabrickredprecipitate. Pleaseanswerthefollowingquestions: (1)chalcocite(Cu2S)throughtheamountofcoppersmeltingmetalairchemicalequation__________________________,theoxidantis____________________. (2)chemicalformulaEconcentratedsolutionreactswithCuIIis______________________. (3)theuseofelectrolyticcopperrefining,intheelectrolyticreactionintheanodematerialis________,electrolytesolutionis________. (4)whentheironoreandpyriteinthenatureofbile(mainingredientFeS2)meettheslowreactionofchalcocite,thereactionis: 14CuSO4+5FeS2+12H2O===7Cu2S+5FeSO4+12H2SO4,isthequalityoftheoxidizedsulfurandsulfurreductionratioof________. Theanalysisfirstfindsoutthesubstancesparticipatinginthereactionandjudgestheproducts,andthenanalyzesthecharacteristicsoftheredoxreaction. (1)accordingtotheCu2Sicon,andO2reactionfortheredoxreactionwithBcanreactwithO2togenerateDandDreactwithwatertoproduceE,EandCucangeneratereactionB,BSO2,DSO3,EH2SO4,thereactionis: Cu2SO2(moderate)hightemperature(hightemperatureshould2CuSO2).ThereactionofCu,thevalenceofOisreduced,sotheoxidationagentisO2andCu2S. (2)Eissulfuricacid,andcanreactwithCu,butconcentratedsulfuricacid.(3)whenthecopperisrefinedbyelectrolysis,thecoarsecopperisusedasanode,andthesaltsolutioncontainingCu2+isusedaselectrolytesolution.(4)accordingtothemassratiooftheoxidizedsulfurandthereducedsulfuris3: 7. Answer (1)Cu2SO2(moderate)hightemperature(highC)andCu2SO22CuSO2 (2)Cu2H2SO4(concentrated)Delta(delta)=2H2OCuSO4SO2) (3)crudecoppersulfateorsaltsolutioncontainingCu2+(4)3: 7; 9.miniaturechemicalexperimentscaneffectivelyreducepollutionandrealizegreenchemistryexperiment,somestudentsdoatestaccordingtothefollowing: differentpositionsofglassliningpaperrespectivelyaddingconcentrationof0.1mo
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