化学与可持续发展高中化学竞赛试题（chemistry and sustainable development high school chemistry competition examination questions）

化学与可持续发展高中化学竞赛试题（CHEMISTRYANDSUSTAINABLEDEVELOPMENTHIGHSCHOOLCHEMISTRYCOMPETITIONEXAMINATIONQUESTIONS）“CHEMISTRYANDSUSTAINABLEDEVELOPMENT“SENIORHIGHSCHOOLCHEMISTRYCOMPETITIONEXAMINATIONQUESTIONOFJIANGSUPROVINCEIN2009THERELATIVEATOMICMASSTHATMAYBEUSEDH1C12N14O16NA23MG24AL27S32CL355K39FE56CU635ACHOICEEVERYDAYONLY1OPTIONSTODOATOTALOF30ITEMS,EACHITEMOF1POINTS,ATOTALOF30POINTS1ACCORDINGTOSTATISTICS,THECORROSIONOFTHEANCIENTBUILDINGSINTHEWORLDINTWENTIETHCENTURYISMORESERIOUSTHANTHATINTHEPASTHUNDREDSOREVENTHOUSANDSOFYEARS,ANDTHEMOSTLIKELYREASONISAMANAGEMENTDEPARTMENTISNOTTIMELYMAINTENANCE,CAUSINGCORROSIONOFANCIENTBUILDINGSBLARGELYUSESFOSSILFUELSTOFORMACIDRAIN,ACCELERATINGTHECORROSIONOFANCIENTBUILDINGSTHERAPIDINCREASEINTHENUMBEROFVISITORSTOTHECACCELERATEDTHEWEAROFANCIENTBUILDINGSDGREENHOUSEEFFECTINTENSIFIES,ACCELERATEDTHEWEATHERINGOFANCIENTARCHITECTURE2THENAMEOFTHEFOLLOWINGCHEMICALEXPERIMENTINSTRUMENTSISWRITTENCORRECTLYABCCRUCIBLECOOLINGPIPEDISSOLUTIONFLASKOFDVERTEBRALSHAPEDBOTTLE3THENAMESOFCHEMICALELEMENTSOFTENHAVESOMEMEANING,ORTOCOMMEMORATETHEDISCOVERYOFTHESITE,ORTOCOMMEMORATEASCIENTIST,ORTOCOMMEMORATETHEDISCOVERERSHOMETOWN,ETCNAMEDAFTERTHESURNAMEOFSCIENTISTSELEMENTNAMESAREMD,CM,MENDELEVIUMEINSTEINIUMNOBELIUMSAWNOES,THESCIENTISTINMEMORIALAMENDELEEV,CURIE,NOBEL,EINSTEINBMENDELEEV,NOBEL,CURIE,EINSTEINCEINSTEIN,MENDELEEV,NOBEL,CURIEANDHISWIFEDEINSTEIN,MENDELEEV,CURIE,NOBEL4SOMEKNOWLEDGEOFCHEMISTRYISOFTENUSEDINLIFEACANBEUSEDASAXRAYFLUOROSCOPYFORORALADMINISTRATIONOFSTOMACHANDINTESTINESBECAUSEBARIUMSULFATEISINSOLUBLEINWATERBCHLORINECANBEUSEDASDISINFECTANTANDBLEACHINGAGENTBECAUSECHLORINEDIOXIDEREACTSWITHWATERTOPRODUCESTRONGOXIDIZINGPROPERTYOFHYPOCHLORITECAFTERARAINSAMPLEWASPLACEDFORAPERIODOFTIME,PHCHANGEDFROM468TO428BECAUSEOFTHEINCREASEOFDISSOLVEDCO2INWATERADDINGPOTASSIUMIODATEINSTEADOFPOTASSIUMIODIDEINDIODIZEDSALTISBECAUSEPOTASSIUMIODATECANDISSOLVEINWATERANDPOTASSIUMIODIDEISINSOLUBLEINWATER5ACCORDINGTOTHEBASICCONCEPTOFCHEMISTRY,THEFOLLOWINGISWRONGAANATOMOFADINOSAURONEARTHMAYHAVEBEENINYOURBODYTENSOFMILLIONSOFYEARSAGOBUSESANAXTOSPLITTHEWOODINTOTWO,INWHICHINDIVIDUALATOMSAREDIVIDEDINTOSMALLERPARTICLESUNDERCERTAINCONDITIONS,THEMETALSODIUMCANBECOMEANINSULATORUNDERTHECONDITIONOFC,THEMETALSODIUMCANBEUSEDASANINSULATORUNDERCERTAINCONDITIONS,WATERCANBESOLIDIFIEDINTOSOLIDAT20DTHE6REASONISDIFFICULTTOFORMNEUTRALELEMENTCOMPOUNDSATHEYAREINERTELEMENTSB,ANDTHEIRCHEMICALPROPERTIESARENOTACTIVECTHEYALLEXISTINTHEFORMOFMONATOMICMOLECULESTHEELECTRONICSTRUCTURESOFDATOMSARESTABLEINGENERAL7,THESTRUCTUREOFAPARTICLEDIAGRAM,WHICHCANBEDETERMINEDATHEPARTICLEHASTHREEUNITSOFNEGATIVECHARGEB,ANDTHENEUTRONNUMBERINTHENUCLEUSIS13CTHEREARETWOELECTRONLAYERSDOUTSIDETHENUCLEUS,ANDTHEMASSNUMBERISL0EIGHTTHESCIENTISTSFOUNDTHAT14360NDAND14460NDINDIFFERENTSEAAREANDTHECONTENTDIFFERENCEISOBVIOUS,RESULTINGINDIFFERENTREGIONS,THEROCK14360NDAND14460NDCONTENTOFDIFFERENTCONCLUSIONS,THEFOLLOWINGSTATEMENTISCORRECTTHEMASSNUMBEROFANDATOMIS60B14360NDHASAPROTONLESSTHAN14460NDTHEMASSNUMBERANDNEUTRONNUMBERARENOTTHESAMEINC14360NDAND14460NDDHASNOFIXEDRELATIVEATOMICMASSDUETOTHEDIFFERENT14360NDAND14460NDCONTENTSINTHEROCKSAROUNDND9THEINSTRUMENTSUSEDINTHEFOLLOWINGEXPERIMENTSARE1THECONCENTRATIONOFACERTAINSUBSTANCEWASPREPAREDTHEPHVALUEOFTHESOLUTIONWASMEASUREDWITHPHTESTPAPERANDTHEFILTRATIONANDEVAPORATIONWERECARRIEDOUTAGLASSRODBGLUEHEADDROPPERCTUBEDFUNNEL10THEFOLLOWINGSUBSTANCESAREINCONFORMITYWITHTHEIRUSESKALSO42ISUSEDASWATERPURIFYINGAGENTANDLIQUIDAMMONIAASREFRIGERANT3NAANDKALLOYSAREUSEDASHEATEXCHANGERSFORFASTNEUTRONREACTORSSILICONFIBERSAREMADEFROMSILICATHENACLOBLEACHINGTEXTILESANDMAKINGPRINTEDCIRCUITBOARDWITHFERRICCHLORIDESOLUTIONTHE456ABII3C43452DTHE11GLASSBULBISUSUALLYCOATEDWITHALITTLEDARKREDSUBSTANCETOREMOVETHERESIDUALOXYGENINTHEBULB,WHICHISDARKREDQUALITYISACU2OBCFE2O3DCOPPERREDPHOSPHORUS12THEIDENTIFICATIONOFTHEFOLLOWINGSUBSTANCESISNOTCORRECTAWITHTHEFLAMEREACTIONTOIDENTIFYNACLANDNA2SO4SOLUTIONBIDENTIFICATIONOFSO2ANDCO2ACTIVITIESOFREDSOLUTIONOFTWOKINDSOFGASIDENTIFICATIONOFNA2CO3SOLUTIONANDNA2SIO3SOLUTIONBYHYDROCHLORICACIDSOLUTIONINCDUSETHETYNDALLEFFECTIDENTIFICATIONOFSTARCHGELANDDISTILLEDWATER13THEMAINMINERALSONTHEMOONAREPYROXENECAMGSI2O6,PLAGIOCLASEKALSI3O8ANDOLIVINEMG,FE2SIO4,ETCTHEFOLLOWINGSTATEMENTSORANALYSISAREINCORRECTAPYROXENE,PLAGIOCLASEANDOLIVINEBELONGTOSILICATEMINERALSTHEOXIDEFORMSOFBPLAGIOCLASECANBEEXPRESSEDASK2O,AL2O3,6SIO2CHASFREEIRONONTHEMOONBECAUSETHEACTIVITYOFIRONONTHEMOONISWEAKERTHANTHATOFIRONONEARTHTHEIRONINOLIVINEDIS2VALENCE14ASSHOWNINDRAWINGS,BISACOMMONMETALORNOTMETALELEMENTSHAVETHEFOLLOWINGTRANSFORMATIONRELATIONSIFCISAVAILABLEFORTAPWATERDISINFECTION,DANDEAREOXIDES,ANDWHENDISCONVERTEDTOE,THEQUALITYOFOXYGENISABOUT258OFTHETOTALMASSOFD,ANDAISAKCLBA1C13CH2O2DNACL15NUCLEARMAGNETICRESONANCENMRTECHNOLOGYHASBEENWIDELYUSEDINMEDICALDIAGNOSISANDOTHERHIGHTECHFIELDSITISKNOWNTHATONLYTHENUMBEROFPROTONSORODDNUMBERSOFNUCLEIHASNMRPHENOMENONTHEFOLLOWINGATOMSCANPRODUCENMRPHENOMENAA13CB18OC24MGD28SI16THEFOLLOWINGSTATEMENTSARECORRECTABLEACHINGPOWDERINTHEAIRFORALONGTIMEWILLINCREASETHEBLEACHINGEFFECTBALUMINUMPRODUCTSAREMORELIKELYTOCORRODEINTHEAIRTHANIRONPRODUCTSCCANBEUSEDASRAWMATERIALTOPRODUCENA,HCL,MG,BR2ANDOTHERSUBSTANCESDOCU3OH2CO32CANALSOBEEXPRESSEDAS3CUO,2CO2,2H217THEFOLLOWINGSTATEMENTSARECORRECTTHEPARTICLESOFACONSTITUTEAMOLECULEMUSTCONTAINCOVALENTBONDSBCOMPOUNDSCOMPOSEDOFNONMETALLICELEMENTSARENOTNECESSARILYCOVALENTCOMPOUNDSCIONSINCRYSTALSMUSTNOTCOVALENTLYDO2,O3ANDO22BELONGTOALLOTROPES18THEFOLLOWINGGROUPSOFSUBSTANCESCANREACTWITHWATERANDTHEPRODUCTSARESOLUBLEINWATERANH3,C12,BNA2,SO3,CNO,NO2,DMG,AL,O219DESIGNEXPERIMENTSSHOULDPAYATTENTIONTOSAFETY,NOPOLLUTION,OBVIOUSPHENOMENONACCORDINGTOTHEPRINCIPLEOFTHEGENERATOR,ASIMPLEGASGENERATORCANBEMADEWITHASMALLHOLEATTHEBOTTOMSEETHERIGHTPICTUREBELOWIFTHEKISCLOSED,THEREACTIONCANNOTBESTOPPED,ANDTHETESTTUBECANBEREMOVEDFROMTHEBEAKERSOMEGASESCAPESTHEFOLLOWINGGASESSHOULDBEPREPAREDBYUSINGTHEDEVICEAUSESMANGANESEDIOXIDEPOWDERANDHYDROGENPEROXIDETOPRODUCEOXYGENHYDROGENPRODUCTIONFROMZINCSULFATEANDDILUTESULFURICACIDINBCWITHFESMASSIVEHYDROCHLORICACIDANDHYDROGENSULFIDEDPRODUCESCARBONDIOXIDEFROMCALCIUMCARBONATEBULKANDDILUTESULPHURICACID20REDOXREACTIONISWIDELYUSEDINTHESMELTINGOFMETALSTHEFOLLOWINGSTATEMENTSAREINCORRECTINTHEPROCESSOFPRODUCINGSODIUMBYELECTROLYSISOFMOLTENSODIUMCHLORIDEFROMA,SODIUMIONISREDUCEDANDCHLORINEIONISOXIDIZEDBCOPPERANDCOPPERSMELTINGMETHODOFWETFIREREACTION,COPPERELEMENTREDUCINGREACTIONINTHEREACTIONOFMAGNETITEWITHC,1MO1FE3O4WASREDUCEDTOFEBYCOANDTRANSFERREDTO9MOLEINTHEPROCESSOFREDUCTIONOFIRONBYDTHERMITPROCESS,THEHEATRELEASEDCANMAKEIRONMELT21CHEMICALEXPERIMENTS,OBSERVATIONOFEXPERIMENTALPHENOMENA,THROUGHANALYSISANDREASONINGTODRAWTHECORRECTCONCLUSIONISONEOFTHEMETHODSOFCHEMICALLEARNINGTHEEXPLANATIONOFTHEFOLLOWINGEXPERIMENTALFACTSISCORRECTACONCENTRATEDNITRICACIDTURNSYELLOWUNDERTHELIGHTCONDITION,INDICATINGTHATCONCENTRATEDNITRICACIDISUNSTABLEANDPRODUCESCOLOREDPRODUCTSANDCANDISSOLVEINCONCENTRATEDNITRICACIDBPEOPLEINKISTARCHSOLUTIONOFCHLORINESOLUTIONTHATCHLORINECANTURNBLUE,THECOLORREACTIONWITHSTARCHCWASADDEDWITHNITRICACIDBARIUMCHLORIDESOLUTIONINASOLUTION,ANDWHITEPRECIPITATEWASPRODUCED,INDICATINGSO42DCOPPERWASPUTINTOCONCENTRATEDSULFURICACID,NOOBVIOUSEXPERIMENTALPHENOMENON,INDICATINGTHATCOPPERINCOLDCONCENTRATEDSULFURICACIDPASSIVATION22NMISAUNITOFLENGTH,LNM109M,WHICHHASSOMESPECIALPROPERTIESWHENTHEPARTICLESOFTHEMATERIALREACHTHENANOMETERLEVELFOREXAMPLE,“COPPERNANOPARTICLES“MADEFROMCOPPERHAVEVERYSTRONGCHEMICALACTIVITYANDCANBEBURNEDINAIRTHEFOLLOWINGSTATEMENTABOUT“NANOCOPPER“ISCORRECTA“NANOCOPPER“ISMOREMETALLICTHANCOPPER,ANDB“NANOCOPPER“ISEASIERTOLOSEELECTRONSTHANCOPPERTHEREDUCIBILITYOFC“NANOCOPPER“ISTHESAMEASTHATOFCOPPER,ANDTHEOXIDATIONOFD“NANOCOPPER“ISSTRONGERTHANTHATOFCOPPER23HIGHTEMPERATUREUNDERHIGHPRESSUREAMMONIAABERPROCESSNEEDS20TO50MPAAND500DEGCRECENTLYTHEUNIVERSITYOFOREGONCHEMISTUSEDATRANSFEDMEOPRPE2CATALYSTFORAMMONIASYNTHESISATROOMTEMPERATUREWHATISWRONGINTHEFOLLOWINGSTATEMENTSAISANENDOTHERMICREACTIONABERPROCESSOFAMMONIASYNTHESIS,SYNTHESISOFAMMONIAISEXOTHERMICREACTIONTHEBANDDONOTNEEDTOBECOMPAREDTOABERPROCESSUNDERTHECONDITIONOFHIGHTEMPERATURE,CANSAVEALOTOFENERGYCAMMONIAISUSUALLYABERPROCESSIRONASCATALYSTDNEWCATALYSTREDUCESTHEENERGYREQUIREDFORTHEREACTION24THEFOLLOWINGSTATEMENTISCORRECTTHEEFFECTIVECOMPONENTOFBLEACHINGPOWDERISCALCIUMCHLORIDEANDCALCIUMHYPOCHLORITESTRICTIMPLEMENTATIONOFMOTORVEHICLEEXHAUSTEMISSIONSTANDARDSISCONDUCIVETOTHEPREVENTIONOFAIRPOLLUTIONTHEUSEOFSULFURDIOXIDEWHITENINGFOODISHARMFULTOHUMANHEALTH4DISINFECTIONOFTAPWATERWITHCHLORINECANPRODUCEORGANICCHLORIDESHARMFULTOHUMANBODYTHEWASTEWATERCONTAININGRICHNITROGENANDPHOSPHORUSNUTRIENTSPRODUCEDBYFOODFACTORIESCANBETRANSPORTEDTORESERVOIRSANDLAKESFORALONGTIMETOFACILITATEFISHCULTUREA,B,C,D25UURANIUMISANIMPORTANTRAWMATERIALFORNUCLEARINDUSTRY,FAMILIARWITH4AND6VALENCEURANYLNITRATEUO2NO32HEATINGCANBEDECOMPOSEDTOUO2NO32,UXOYNO2O2,AT600K,THEGASPRODUCTSSETINATESTTUBEANDPOURWATER,WATERFILLEDTUBETHECHEMICALFORMULAFORTHEFORMATIONOFURANIUMISAUO2BUO3C2UO2UO3DUO22UO326ATACERTAINTEMPERATURE,ACERTAINAMOUNTOFNA2O2ISADDEDTOTHESATURATEDCAUSTICSODASOLUTIONTORECOVERTOTHEORIGINALTEMPERATUREAFTERSUFFICIENTREACTIONTHECNAINCREASESINASOLUTION,ANDTHEPHINCREASESWITHTHERELEASEOFBFROMO2SOLUTION,ANDTHEO2EMISSIONOCCURSTHENUMBEROFNAINCSOLUTIONDECREASES,ANDTHEO2RELEASEDFROMDSOLUTIONREMAINSUNCHANGEDWITHH2EMISSIONFROMPHSOLUTION27FROMSOMEPROPERTIESCN2ANDC12,NH3ANDH2O,NH4ANDH3O,NH222ANDOHARESIMILARWITHINEACHGROUP,ACCORDINGLY,ITISCORRECTTOJUDGETHATTHEFOLLOWINGREACTIONSARECORRECT1CN22OHOCNCNH2O2NA2NH32NANH2H22THECUO2NH4CLCUCL22NH3H2ONH4C1NANH22NH3NACLA,B,C,ANDDAREALLCORRECT28ACHEMICALTEAMDESIGNEDTHEFOLLOWINGEXPERIMENTALSCHEMETODETERMINETHEMASSFRACTIONOFCOPPERINACERTAINCOPPERALUMINUMMIXTURESOLUTIONICOPPERALUMINUMMIXTUREADDINGACERTAINCONCENTRATIONOFASOLUTIONTODETERMINETHEVOLUMEOFGASGENERATEDSCHEMEIICOPPERALUMINUMMIXTUREADDINGACERTAINAMOUNTOFACERTAINCONCENTRATIONOFSOLUTION,AFTERFILTRATION,WASHINGTODETERMINETHEQUALITYOFTHEREMAININGSOLIDSTHEFOLLOWINGINCORRECTJUDGMENTSAREASOLUTIONAANDBCANBEHYDROCHLORICACIDORNAOHSOLUTIONBSOLUTION,BCANNOTUSECONCENTRATEDNITRICACIDDILUTENITRICACIDDCANBEUSEDFORAANDBINCSOLUTION,ANDTHESCHEMEIIINLABORATORYISMORECONVENIENTTOIMPLEMENT291GMAGNESIUMPOWDERBURNSINOXYGEN,WEIGHTGAINOF064G,WHILETHECOMBUSTIONINTHEAIR,THEWEIGHTGAINOFLESSTHAN064G,THEREASONISAPOWDERINTHEAIRWITHOUTCOMPLETECOMBUSTIONOFCOMBUSTION,BMAGNESIUMOXIDENOTALLWEIGHINGCMAGNESIUMREACTSWITHNITROGENINTHEAIRANDREACTSWITHCARBONDIOXIDEWHENDMAGNESIUMISBURNEDINTHEAIR30THEREISAKOHSOLIDWHICHISEXPOSEDINTHEAIRTHEWATERCONTENTIS28,K2C0372ISDETERMINEDBYANALYSIS,ANDTHESAMPLELGISREACTEDWITH1MOL/LHYDROCHLORICACID100MI,THENEUTRALIZATIONOFEXCESSHYDROCHLORICACIDWASCARRIEDOUTWITH37KOHSOLUTIONWITHMASSFRACTIONOF5GTHEOBTAINEDSOLUTIONWASEVAPORATEDANDDRIEDTHEQUALITYOFTHEOBTAINEDSOLIDWASA373GB400GC450GD745GTWO,CHOICEEACHITEMHAS12OPTIONSTODOATOTALOF20ITEMS,EACHITEMOF2POINTS,ATOTALOF40POINTS31SCIENTISTSPROPOSEDTHATSILICONIS“ENERGYINTWENTYFIRSTCENTURY“,WHICHISMAINLYDUETOTHESILICONASASEMICONDUCTORMATERIALPLAYSANIMPORTANTROLEINTHEPROCESSOFSOLARPOWERGENERATIONTHEFOLLOWINGSTATEMENTABOUTSILICONISCORRECTAISABUNDANTINSILICONINNATUREBCONTAINSALARGEAMOUNTOFELEMENTALSILICONINNATURECHIGHPURITYSILICONISUSEDTOMAKECOMPUTERCHIPSTHEMAINCOMPONENTOFDOPTICALFIBERISSI32THEFOLLOWINGSTATEMENTSARECORRECTATOREMINDPEOPLEINTHEUSEOFCONCENTRATEDH2S04TOPAYGREATATTENTIONTOSAFETY,STORAGECAPACITYOFH2S04THICKTHERIGHTLOGOISATTACHEDTOTHEINSTRUMENTAHBOHCCLDNATEN34STUDIESSHOWTHATO1MOL/LCUS04SOLUTIONAND01MOL/LNAOHSOLUTIONAREMIXEDATAVOLUMERATIOOF23ATROOMTEMPERATUREAFTERSUFFICIENTREACTION,THEPHOFTHESOLUTIONWAS7ACCORDINGLY,THEFOLLOWINGSTATEMENTISCORRECTACOPPERSULFATEANDSODIUMHYDROXIDE,GENERATINGBLUEHYDROXIDETHEABOVEPHENOMENONINBMUSTBETHEERROROFSOLUTIONCONCENTRATIONORVOLUMERECORDCCOPPERSULFATEANDSODIUMHYDROXIDE,THEPRODUCTISNOTNECESSARILYTHECASETHEREACTIONOFDMAYBE4CUS046NAOHCU4OH6S043NA2S04DTHEPOSSIBLEREACTIONIS4CUS046NAOHCU4OH6S043NA2S0435ITISPOINTEDOUTTHATTHEVAPORDENSITYOFANHYDROUSALUMINIUMCHLORIDEATDIFFERENTTEMPERATURESUNDERSTANDARDATMOSPHERICPRESSUREISTC200600800DG/ML68X103265X103151X103GASMOLEL/MO1388,71688VISIBLE,THECHEMICALFORMOFANHYDROUSALUMINIUMCHLORIDEINTHEFORMOFANHYDROUSALUMINUMAT600AALCL3BA12C16CACL3ANDA12C16DA13C19ITISREPORTEDTHATIN200836,THEBEIJINGOLYMPICGAMESONTHEUSEOFTHEGUNFORTHE“GUNPOWDER“COMPONENTISPOTASSIUMCHLORATEANDREDPHOSPHORUS,THEIMPACTOFNOISE,ANDWHITESMOKETHECHEMICALEQUATIONFORTHECOLLISIONIS5KCLO36P3P2O35KCL,THEFOLLOWINGISTHEWRONGDESCRIPTIONTHERATIOOFTHEAMOUNTOFOXIDANTANDREDUCTANTTOAINTHEABOVEREACTIONIS56THEREASONWHYBPRODUCESWHITESMOKEISTHATTHEP205WHITESOLIDPARTICLESSMOKEHAVESTRONGWATERABSORPTION,ABSORBTHEMOISTUREINTHEAIR,ANDPRODUCESMALLDROPLETSOFPHOSPHORICACIDFOGTHEAMOUNTOFELECTRONTRANSFERMATERIALWAS30MOLWHENPWASCONSUMED3MOLCINTHEABOVEREACTIONDBECAUSEOFREDPHOSPHORUSANDWHITEPHOSPHORUSISOMERS,SOTHEPOWDEROFREDPHOSPHORUSCANBEUSEDINSTEADOFWHITEPHOSPHORUS37AHIGHTEMPERATURESUPERCONDUCTINGMATERIALYBA2CU3OXCANBESYNTHESIZEDBYGRINDINGANDSINTERINGWITHCUO,BACO3ANDY2O3ASRAWMATERIALSINORDERTOSYNTHESIZETHISKINDOFHIGHTEMPERATURESUPERCONDUCTOR05MOL,THEAMOUNTOFSUBSTANCEY2O3BACO3ANDCUOMO1SHOULDBETAKENASTHEORDERINTHEORYA050,050,050B15,1,0五十C025、1、15D017、025、138。下列化学反应的离子方程式正确的是A用小苏打治疗胃酸过多HCO3HCO2H2OB往过量氨水中滴加氯化铝溶液AL33NH3。H2OAI（OH）33NH4C氢氧化钡溶液与稀硫酸反应BA2SO42HOHBASO4H2OD碳酸氢钙溶液和氢氧化钠溶液混合一OHCO32H2O39。右图是某学校实验室从化学试剂商店买回的硫酸试剂标签上的部分内容。据此下列说法正确的是A该硫酸的物质的量浓度为92MOLLB1MOLAI与足量的该硫酸反应产生3克氢气C“化学纯”是指这种硫酸只含H2S04和H20分子D配制200ML23MOLL的稀硫酸需量取该硫酸25毫升40。下列各组离子中，当溶液呈强酸性时有气体生成，当溶液呈强碱性时有沉淀生成。则该组离子可能是（）ABCD41。设NA为啊佛加德罗常数，下列叙述正确的是（）一个常温下112L的甲烷含有甲烷分子数为05钠B一定量的铁与含1MOLHNO3的稀硝酸恰好反应，则被还原的氮原子数小于1NAC125ML16MOL/L浓硫酸与足量铜反应，转移电子数为02NAD常温常压下，THEMASSOF44GCO2GASIS1MOL42ASOLUTIONMAYCONTAINSEVERALSPECIESOFNA,AG,AL3,A1O2,S2,CO32,SO32,NO3PLASMASTHISSOLUTIONWASADDEDTODILUTEHYDROCHLORICACID,WITHALIGHTYELLOWPRECIPITATEANDGAS,THESOLUTIONFORTHEYELLOWFLAMEREACTIONACCORDINGTOTHEABOVEEXPERIMENTALPHENOMENA,THEFOLLOWINGCONCLUSIONSAREINCORRECTATHEREMUSTBES2,S032,NAINTHISSOLUTIONBMAYBEA102,C0321INTHISSOLUTIONCTHEREMUSTBENOAG,AL3INTHISSOLUTIONDMAYHAVES2ANDN03INTHISSOLUTION43ASSHOWNINTHEDIAGRAM,ASMALLAMOUNTOFNA2S03CRYSTALSAREINJECTEDINTOTHESYRINGEANDINHALEDASMALLAMOUNTOFCONCENTRATEDSULFURICACIDOABLUELITMUSPAPERTURNSREDAFTERTHEFIRSTFADEBNAOHSOLUTIONCANBEUSEDTOABSORBEXCESSS02INTHEEXPERIMENTCWETSTARCHKITESTPAPERREMAINEDBLUE,INDICATINGTHATTHEOXIDATIONOFS02WASWEAKERTHAN12DMAGENTAPAPERANDSTAINEDWITHKMN04SOLUTIONFILTERFADED,WHICHPROVEDTHEBLEACHINGPROPERTYOFS0244THEFOLLOWINGSTATEMENTISCORRECTACANDISTINGUISHNH4C1,NABR,CUS04ANDFECL3WITHKOHSOLUTIONBCANDISTINGUISHTHREEBLACKPOWDERSOFC,CUOANDFEWITHDILUTEHYDROCHLORICACIDWHENCSOLUTIONISADDEDWITHDILUTEHYDROCHLORICACID,COLORLESSGASISPRODUCED,ANDTHEGASCANMAKETHECLARIFIEDLIMEWATERBECOMETURBID,THENTHESOLUTIONMUSTCONTAINCO32DCANBEUSEDTOTESTWHETHERNA2SO3ISDETERIORATEDBYBACL2SOLUTIONANDDILUTENITRICACID45NA2FE04ISANEFFICIENTANDMULTIFUNCTIONALWATERTREATMENTAGENT,ANDHASBROADAPPLICATIONPROSPECTSAMETHODFORTHEPREPARATIONOFNA2FEO4BYCHEMICALEQUATIONASFOLLOWS2FESO46NA2FEO42NA2O2NA2SO4O2O22NA2,RESPONDEDTHEFOLLOWINGSTATEMENTSISCORRECTANA2O2ISONLYUSEDASOXIDANTINTHEREACTIONBNA2FEO4ISBOTHANOXI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