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1、电化学专题测试题单选题(2分×24=48分)（Electrochemicaltestquestions,radioquestions(224=48points)）Documentsfromthenetwork,Icollected,finishing,andifthereareomissions,errors,butalsopleasecorrectme!ElectrochemicalspecialtestquestionsRadioquestion(2*24=48)1.undercertainconditions,sulfuricacidwithdiluteelectrolytec
2、oncentration,H2O2isonlythereductionproduct.Thisprinciplecanbeusedtoproducehydrogenperoxide,anditschemicalformulais3H2O+3O2O3+3H2O2WhatfollowsistrueTheanodeofA.electrolysiscellgenerateshydrogenperoxide,andthecathodegeneratesozoneThepHofthesulfuricacidsolutionremainsconstantintheB.cellC.typeozone
3、generatingelectrodereactionfor3H2O6e=O3+6H+TypeD.toproducehydrogenperoxideelectrodereactionfor2H2O2e=H2O2+2H+2.afterthepicklingandrustremovingnailsaresoakedinsaturatedsaltwaterandputintothedeviceasshowninthediagram,thefollowingstatementiscorrect:A.afteraperiodoftime,theintraductalwatercolumnris
4、esinthetesttubeTheironspikeinB.IwascorrodedbyelectrolyticreactionThecorrosionoftheC.ironnailsintheunithasacceleratedovertimeD.Itubeironnailatypeofelectrodereactionreaction:2Cl2e==Cl2Belowthe3.canbeverifiedusinginertelectrodeelectrolysisNaClsolution(containingphenolphthalein)deviceofelectrolysis
5、productis(thattheDCpowersupply,Isaidthecurrentstrength,e-Electronics)4.asshowninthetwodevice,thevolumeofsolutionwas200mL,beginningthesolutionconcentrationwas0.1mol-L-1,workafteraperiodoftime,measuredby0.02molelectronicwire,withoutconsideringthechangeofsalthydrolysisandsolutionvolume,Whatfollows
6、istrueA.gasvolume:1>2xB.electrodesolidprecipitationquality:1>2xThechangeofpHC.solution:increase,decreaseintheTheelectrodereactiontypeD.deviceisintheAnode:4OH--4e-=2H2O+O2=Cathode:2H++2e-=H2=5.theconnectionofthecopperelectrodeinthefollowingdiagramisincorrectCopperzincprimarybatteryelectrolyticre
7、finingofcopperplatingoncopperelectrolyticcopperchloridesolution6.therightdiagramistheschematicdiagramofelectrolysissaturatedsaltwaterbycationexchangemembranemethodThefollowingstatementisincorrectThegasA.escapesfromtheEmouthisH2B.a
