高中化学关键知识点易错辨析（the key point of high school chemistry knowledge error）

高中化学关键知识点易错辨析（THEKEYPOINTOFHIGHSCHOOLCHEMISTRYKNOWLEDGEERROR）THEKEYPOINTOFHIGHSCHOOLCHEMISTRYKNOWLEDGEERRORKNOWLEDGEMODULEOFELEMENTCOMPOUNDS1THELARGERTHEATOMICRADIUSOFTHEALKALIMETALELEMENT,THEHIGHERTHEMELTINGPOINT,THEGREATERTHEACTIVITYOFTHEELEMENTARYSUBSTANCETHEMELTINGPOINTDECREASESASTHERADIUSOFTHEATOMINCREASESALL2SULFURANDWHITEPHOSPHORUSSOLUBLEINCARBONDISULFIDE,CARBONTETRACHLORIDEANDOTHERORGANICSOLVENT,ORGANICACIDISINSOLUBLEINWATERERRORLOWERORGANICACIDSARESOLUBLEINWATER3ADDENOUGHCONCENTRATEDSULFURICACIDTOPRODUCEBLUESOLIDINASATURATEDSOLUTIONOFCOPPERSULPHATERIGHT,CONCENTRATEDSULFURICACIDWATERAFTERPRECIPITATIONWITHVITRIOL4THEONLYELEMENTSTHATCANREACTWITHCOLDWATERTOEMITGASEOUSMATTERAREACTIVEMETALLICELEMENTSORACTIVENONMETALLICELEMENTSFOREXAMPLE,2NA2O22H2OERROR,O24NAOH5LIQUEFYTHEAIRANDTHENGRADUALLYHEATUP,FIRSTPRODUCINGOXYGEN,ANDREMAININGNITROGENERROR,THEBOILINGPOINTOFN2ISBELOWO2,ANDN2ISFIRSTOBTAINED,LEAVINGLIQUIDOXYGEN6SMELTINGPIGIRONINTOCARBONSTEEL,THEMAINPROBLEMISTOREMOVETHEPIGIRONINADDITIONTOVARIOUSELEMENTSEXCEPTFE,PIGIRONPURIFICATIONTHEMISTAKEISTOREDUCETHEPERCENTAGEOFCINPIGIRON,NOTTOPURIFYIT7ALTHOUGHPOTASSIUMINNATUREISSOLUBLEINWATER,BUTKINSOILISNOTHIGH,SOITISNECESSARYTOUSEPOTASSIUMFERTILIZERTOMEETTHENEEDSOFPLANTGROWTHTHEPOTASSIUMCONTENTINNATUREISNOTLOW,BUTITEXISTSINTHEFORMOFCOMPLEXSILICATEANDISDIFFICULTTODISSOLVEINWATER8PREPARATIONOFBLEACHINGPOWDER,PREPARATIONOFBORDEAUXANDMODIFIEDACIDSOIL,LIMESHOULDBEUSEDRIGHT,PREPARATIONOFLIMEANDBLEACHINGPOWDERFORCL2REACTION,BORDEAUXMIXTUREOFCOPPERSULFATEANDHYDRATEDLIME9SILICAISANACIDOXIDEWHICHISINSOLUBLEINACIDSOLUTIONSERROR,SIO2CANBEDISSOLVEDINHYDROFLUORICACID10IRONEXCESSSOLUBLEINHYDROCHLORICACID,THENADDINGCHLORINEORBROMINEORIODINEORZINCNITRATE,ALLCANPRODUCEFE3ERRORADDINGIODINEWATERWILLRESULTINFEI2,BECAUSETHEOXIDATIONOFFE3ISNOTASGOODASCL2,BR2,BUTSTRONGERTHANI2,ANDFEI3DOESNOTEXISTINSOLUTION11ATROOMTEMPERATURE,CONCENTRATEDNITRICACIDCANBESTOREDINALUMINUMCANS,INDICATINGTHATALUMINUMANDCONCENTRATEDNITRICACIDDONOTRESPONDERROR,PASSIVATIONISACHEMICALPROPERTYTHATESSENTIALLYPRODUCESADENSEAL2O3OXIDEFILMTHATPROTECTSTHEALUMINUMCANS12NAALO2,NA2SIO3,NA2CO3,CACLO2,NAOH,C17H35COONA,C6H5ONAANDOTHERSATURATEDSOLUTIONINTOTHEWHITEPRECIPITATECO2,CONTINUETOPASSINTOTHECO2TOEXCESS,WHITEPRECIPITATIONSTILLDOESNOTDISAPPEARERROR,CACLO2CONTINUESTOPASSTHROUGHCO2TOEXCESS,WHITEPRECIPITATEDISAPPEARS,ANDFINALLYGETSCAHCO3213ALARGEAMOUNTOFSULFURDIOXIDEINTHEATMOSPHEREISDERIVEDFROMTHECOMBUSTIONOFCOALANDPETROLEUMANDTHESMELTINGOFMETALORESCORRECT14,ACLEARSOLUTIONBYNH4CL,AGNO3,NAOHTHREESUBSTANCESMIXEDINTO,ANDIFYOUADDSUFFICIENTNITRICACID,WHITEPRECIPITATEWILLBEPRODUCEDCORRECT,NH4CL,AGNO3ANDNAOHREACTAFTERMIXINGTOFORMAGNH32ADDSUFFICIENTNITRICACIDTOPRODUCEAGCLANDNH4NO315,INORDERTOMAKEFULLUSEOFRAWMATERIALS,THETAILGASINSULFURICACIDINDUSTRYMUSTBEPURIFIEDANDRECOVEREDTHEMISTAKEISTOPREVENTAIRPOLLUTION16THEREACTIONOF1MOLALWITHSUFFICIENTNAOHSOLUTIONLEADSTOTHETRANSFEROF3MOLELECTRONSCORRECT17SODIUMSULFIDECANNEITHERREACTWITHCAUSTICSODANORREACTWITHHYDROGENSULFATEERROR,SODIUMSULFIDECANREACTWITHHYDROGENSULFATENA2SH2S2NAHS18INASOLUTIONCONTAININGHIGHCONCENTRATIONOFFE3INIT,I,ALO,S2,CO32,HCO3,NOTALOTOFCOEXISTENCEPROPERLY,FE3CANREACTWITHSCN,REACTWITHIANDS2,ANDUNDERGODOUBLEHYDROLYSISWITHCO32,HCO3ANDALO219ACTIVATEDCARBON,SULFURDIOXIDE,CHLORINE,ETCCANMAKETHEMAGENTAFADE,BUTTHEESSENCEOFTHEREACTIONISDIFFERENTRIGHT,THEACTIVATEDCARBONADSORPTIONFORMAGENTA,PHYSICALCHANGES,SO2ISGENERATINGUNSTABLECOMPOUNDSANDREVERSIBLEREDOXREACTION,CHLORINEISIRREVERSIBLE20ETHYLACETATE,SODIUMACETATE,BROMINE,GLASS,TRIBROMOPHENOL,BARITE,TSPCANREACTIONWITHCAUSTICSODAERROR,BARITEMAINCOMPONENTBASO4DOESNOTREACTWITHCAUSTICSODA21FEBR3,FECL2ANDBR2CANBEOBTAINEDBYENTERINGACERTAINAMOUNTOFCL2INFEBR2SOLUTIONMISTAKE,FE2ANDBR2DONOTCOEXIST22BECAUSEFE3ANDS2CANUNDERGOREDOXREACTIONS,FE2S3DOESNOTEXISTERROR,INTHEPH4SOLUTIONAROUNDFE3,NA2SCANBEOBTAINED,ANDTHESOLUBILITYOFFE2S3ISSMALL23SODIUMHYPOCHLORITEANDHYPOCHLORITECANBEOBTAINEDBYPASSINGASMALLAMOUNTOFSULFURDIOXIDEINTOTHESODIUMHYPOCHLORITESOLUTIONERROR,HYPOCHLORITECANOXIDIZESODIUMSULFITEANDWILLYIELDNACLANDH2SO42456GIRONREACTSWITHSUFFICIENTACIDANDTHENUMBEROFELECTRONSTRANSFERREDIS02NAERRORIFTRANSFERREDWITHASTRONGOXIDIZINGACIDSUCHASNITRICACID,03NA25COMPOUNDSCONTAININGTHEHIGHESTVALENCEELEMENTSDONOTNECESSARILYHAVESTRONGOXIDIZINGPROPERTIESCORRECT,SUCHASTHINNERHCLO4,H2SO4,ETCTHEWEAKERTHEREDUCIBILITYOFTHE26ELEMENTS,THESTRONGERTHEOXIDATIONOFTHECATIONSERRORSSUCHASTHEREDUCIBILITYOFCUAREWEAKERTHANIRON,WHILECU2ISLESSOXIDIZEDTHANFE327CUCO3CANBEOBTAINEDBYADDINGCO32INCU2SOLUTIONERROR,PURECUCO3WITHOUTLAWADDINGCO32TOCU2SOLUTIONWILLPRODUCECU2OH2CO3IMMEDIATELY28ELEMENTALXCANDISPLACEELEMENTALYFROMTHESOLUTIONOFSALT,ANDTHEPHYSICALPROPERTIESOFXANDYCANBEASFOLLOWS1METALSANDMETALS2NONMETALSANDNONMETALS3METALSANDNONMETALS4NONMETALSANDMETALSERROR,4NONMETALSANDMETALSARENOTLIKELYTOOCCURINTHISREACTION29H2S,HI,FECL2,CONCENTRATEDH2SO4,NA2SO3,PHENOLANDOTHERSOLUTIONSINTHEAIRFORALONGTIMEDUETOOXIDATIONREDUCTIONREACTIONANDMETAMORPHISMERROR,H2SO4ISSPOILEDBYWATERABSORPTIONANDRELEASEOFSO330CONCENTRATEDNITRICACIDANDCONCENTRATEDSULFURICACIDCANREACTWITHCOPPERANDIRONATROOMTEMPERATUREERROR,CONCENTRATEDSULFURICACIDANDCOPPERDONOTRESPONDATNORMALTEMPERATUREBASICCONCEPTS,BASICTHEORIES,KNOWLEDGEMODULES1OXIDESTHATREACTWITHWATERTOPRODUCEACIDSAREACIDICOXIDESTHEERRORISTHATANOXIDETHATPRODUCESONLYACIDCANBEDEFINEDASANACIDOXIDETHEGREATERTHEBONDENERGYIN2MOLECULES,THEMORESTABLETHEMOLECULARCHEMICALPROPERTIESCORRECT3THEMETALACTIVITYORDERINWHICHTHEMETALINFRONTOFHYDROGENCANDISPLACEHYDROGENFROMTHEACIDSOLUTIONERROR,SN,PBANDOTHERREACTIONSARENOTOBVIOUS,ENCOUNTEREDWEAKACIDALMOSTDOESNOTREACTWHILEINTHESTRONGOXIDIZINGACIDMAYNOTGETH2,SUCHASNITRICACID4THESUBSTANCETHATREACTSWITHTHEACIDANDREACTSWITHTHEBASEISEITHERANAMPHOTERICOXIDEORANAMPHOTERICHYDROXIDEERRORSSUCHASSIO2CANREACTWITHHF/NAOHATTHESAMETIME,BUTITISANACIDOXIDE5ATOMOFTHEOUTERMOSTLAYEROFEISLESSTHANOREQUALTO2ISAMETALATOMTHEOUTERMETALATOMELECTRONNUMBERIS1/2/3/4/5/6/7WRONG,OUTSIDETHEATOMICNUCLEUSOFTHEOUTERMOSTLAYEROFEISLESSTHANOREQUALTO2CANBEHE,HANDOTHERNONMETALATOMSTHEOUTERMETALATOMELECTRONNUMBERIS1/2/3/4/5/6,117METALELEMENTSINTHEOUTERMOSTLAYEROF7EHASNOCLEARCONCLUSION6NONMETALATOMSAREWEAKINOXIDATION,ANDTHEREDUCIBILITYOFTHEIRANIONSISSTRONGERCORRECT7PARTICLESWITHTHESAMETOTALNUMBEROFPROTONSANDTWOOFTHETOTALNUMBEROFELECTRONSOUTSIDETHENUCLEUSCANBE1ATOMSANDATOMS2ATOMSANDMOLECULES3MOLECULESANDMOLECULES4ATOMSANDIONS5MOLECULESANDIONS6ANIONSANDCATIONS7CATIONSCATIONERROR,THESEGROUPSARENOT4ATOMSANDIONS5MOLECULESANDIONS6ANIONSANDCATIONS7CATIONSANDCATIONS8,SALTANDALKALIREACTTOPRODUCENEWSALTSANDBASESACIDSANDBASESREACTONLYTOPRODUCESALTSANDWATERWRONG,SUCHAS10HNO33FEOH23FENO33NO8H2OTHETWOACIDSOF9PH2ANDPH4AREMIXED,ANDTHEPHVALUEOFTHEMIXTUREMUSTBEBETWEEN2AND4WRONG,SUCHAS2H2SH2SO33S3H2O10STRONGELECTROLYTESAREIONICINTHEIONICEQUATIONTHESTRONGELECTROLYTEANDH2SO4THATAREINSOLUBLEINWATERSHOULDBEWRITTENASMOLECULESTHE11IONIZATIONCOMPOUNDSONLYHCATIONCANMAKEPURPLELITMUSREDWRONG,LIKEWATER12FORMICACIDIONIZATIONEQUATIONISHCOOHHCOOHERRORFIRST,IONIZATIONISREVERSIBLE,FOLLOWEDBYFORMATEIONSHOULDBEHCOO13IONICCRYSTALSAREIONICCOMPOUNDS,MOLECULARCRYSTALSARECOVALENTCOMPOUNDSMANYMOLECULESAREELEMENTARYSUBSTANCES14GENERALLY,METALOXIDES,COLLOIDALPARTICLESOFMETALHYDROXIDES,AREPOSITIVELYCHARGEDCORRECTINTHE15ELEMENTPERIODICTABLE,THENUMBEROFELEMENTSINEACHCYCLESATISFIES2N2NISTHENATURALNUMBERYES,NOTETHATNISNOTAPERIODICORDINALTHESTRONGSOLUTIONOFTHE16STRONGELECTROLYTEISSTRONGERTHANTHECONCENTRATEDSOLUTIONOFTHEWEAKELECTROLYTEAWEAKSOLUTIONWITHASTRONGELECTROLYTESOLUBILITY,CONCENTRATEDSOLUTIONWITHAWEAKELECTROLYTEDUETOINCOMPLETEIONIZATION,AWEAKCONDUCTIVITY,SUCHASASATURATEDSOLUTIONOFBASO4INTHE17STANDARD,THETOTALNUMBEROFCARBONATOMSINCOANDCO2MIXEDWITH224LATANYPROPORTIONISABOUTNACORRECT18ATTHESAMEPRESSURE,WITHTHEQUALITYOFTWOKINDSOFGASVOLUMERATIOISEQUALTOTWOKINDSOFINVERSEGASDENSITYCORRECTTHEDIAMETEROFTHEULTRAFINEPOWDERPARTICLESINTHE19NANOMETERMATERIALISINTHESAMEORDEROFMAGNITUDEASTHATOFTHECOLLOIDALPARTICLESCORRECT,BOTHARE10100NMWHEN201MOLOHDISCHARGESCOMPLETELYDURINGELECTROLYSIS,THECIRCUITPASSESTHROUGHNAELECTRONSRIGHT,4OHO24E2H2O21THEAMOUNTOFNA2SO3,NA2S,NAHSO3ANDH2SO3INTHESAMEVOLUMEANDMASSCONCENTRATIONDECREASESINTURNCORRECT,ITISSUGGESTEDTHATTHECONSERVATIONOFELECTRICITYFROMTHEANGLEOFUNDERSTANDINGTHERELATIVEATOMICMASSOF22CARBON12IS12,ANDTHEMOLARMASSOFCARBON12IS12G/MOLCORRECT23,ELECTROLYSIS,ELECTROPHORESIS,IONIZATIONANDELECTROCHEMICALCORROSIONALLNEEDTOBECARRIEDOUTUNDERELECTRIFIEDCONDITIONS,ALLOFWHICHARECHEMICALCHANGESERROR,IONIZATIONDOESNOTREQUIREENERGIZATION,ELECTROCHEMICALCORROSIONITSELFPRODUCESLOCALCURRENT,ELECTROPHORESISISAPHYSICALCHANGE24FAT,STARCH,PROTEIN,PHENOL,ETHYLENE,NITROGLYCERIN,SODIUMALUM,AL2S3,MG3N2,CAC2,ETCUNDERCERTAINCONDITIONSCANUNDERGOHYDROLYSISERROR,ETHYLENEHYDROLYSISTHEPRESENCEOFKANDCL25POTASSIUMCHLORIDECRYSTALSODIUMPEROXIDEINTHEPRESENCEOFNAANDOFOR11SI,OATOMSEXISTONLYINQUARTZTHEERRORINNAANDO22,SODIUMHYDROXIDE21,WITHOUTO,THEPRESENCEOFIMPURITIESINQUARTZ26,NANO2GASMOLECULESINASTANDARDCONDITION,THEVOLUMEOFABOUT224LERROR,NO2WILLPARTIALLYDOUBLEPOLYASN2O427ATROOMTEMPERATUREANDATMOSPHERICPRESSURE,32GOXYGENCONTAINSNAOXYGENMOLECULES60GSIO2CONTAINSNAMOLECULES,3NAATOMSERROR,THEREARENOMOLECULESINSIO228PARTICLESTHATMAKEUPMOLECULARCRYSTALSMUSTCONTAINCOVALENTBONDSARAREGASINSOLIDSTATEINTHEFORMOFAMONATOMICMOLECULECRYSTAL29,COLLOIDSPRODUCEELECTROPHORESIS,SOCOLLOIDSDONOTCARRYCHARGESERROR,COLLOIDWITHCHARGETHESMALLERTHEPHVALUEOFTHE30SOLUTIONIS,THEMOREHYDROGENIONITCONTAINSERRORDOESNOTINDICATEVOLUME31ONLYANIONSEXISTINIONICCOMPOUNDSERRORTHEANIONSINTHESOLUTIONEXISTINTHEFORMOFHYDRATIONTHEMELTINGOF32ATOMICCRYSTALSREQUIRESDESTRUCTIONOFPOLARBONDSORNONPOLARCOVALENTBONDSCORRECT33NH3,CL2,SO2ANDSOONAREALLNONELECTROLYTESERROR,CL2ISNEITHERELECTROLYTENORNONELECTROLYTETHEMELTINGPOINTOF34MOLECULECRYSTALSISNOTNECESSARILYLOWERTHANTHATOFMETALCRYSTALSRIGHTFOREXAMPLE,HGISLIQUIDATNORMALTEMPERATURE35,THEMELTINGPOINTOFTHESAMEPRIMARYGROUPELEMENTSDOESNOTNECESSARILYRISEFROMTOPTOBOTTOM,BUTTHEMELTINGPOINTOFTHEHYDRIDERISESTHEMELTINGPOINTOFHYDRIDESISNOTNECESSARILYHIGHERTHANTHATOFHYDROGENBONDS36AFTERELECTROLYSISOFCOPPERSULFATESOLUTIONORSILVERNITRATESOLUTION,THEACIDITYOFTHESOLUTIONWILLINCREASEERROR,IFCUISUSEDASANODE,ELECTROLYTICACIDITYWILLBEREDUCEDIN37SODIUMCHLORIDECRYSTALS,THEREARE6NEARESTANDEQUALSODIUMIONSAROUNDEACHSODIUMIONWRONG,THEREARE12381L1MOL/LFECL3SOLUTIONISCOMPLETELYHYDROLYZEDTOPRODUCECOLLOIDALPARTICLESOFNATHEERRORISFARSMALLERTHANNA,ANDACOLLOIDALPARTICLEINTHECOLLOIDISMADEUPOFMANYIONS39INHF,PCL3,P4,CO2,SF6ANDOTHERMOLECULES,ALLATOMSMEETTHEOUTERMOST8ESTRUCTUREERROR,HFANDSF6ARENOTSATISFIED40METALLICELEMENTSWITHLESSOUTERMOSTELECTRONS,ITMUSTBEMORELIVELYTHANTHATOFTHEOUTERMOSTELECTRONERRORSSUCHASAGANDCAORGANICCHEMISTRYKNOWLEDGEMODULETHE1HYDROXYLGROUPSCANBEREACTIONTYPE,SUBSTITUTION,ELIMINATION,ESTERIFICATION,OXIDATION,CONDENSATIONPOLYMERIZATION,NEUTRALIZATIONREACTIONCORRECTLY,REPLACINGALCOHOLS,PHENOLS,CARBOXYLICACIDSELIMINATIONALCOHOLSESTERIFICATIONALCOHOLSANDCARBOXYLICACIDSOXIDATIONALCOHOLSANDPHENOLSCONDENSATIONALCOHOLS,PHENOLS,CARBOXYLICACIDSNEUTRALIZATIONREACTIONSCARBOXYLICACIDS,PHENOLS2SIMPLESTCH2OORGANICCOMPOUNDSMETHYLFORMATE,MALTOSE,CELLULOSEMISTAKE,MALTOSEANDCELLULOSEARENOTCONSISTENT3MOLECULARFORMULAC5H12O2DIOL,BACKBONECARBONATOMSTRUCTURE3HAS2KINDSCORRECT4ATROOMTEMPERATURE,THECHPRODUCEDBYIONIZEDWATERINPH11SOLUTIONIS104TIMESOFCHPRODUCEDBYPUREWATERIONIZATIONTHEERRORSHOULDBE1045THEREARE4KINDSOFREACTIONPRODUCTSOFMETHANEANDCHLORINEUNDERUVIRRADIATIONERROR,PLUSHCL,5INALL6ALCOHOLSCANBEOXIDIZEDTOALDEHYDESUNDERCERTAINCONDITIONS,ANDALDEHYDESCANOXIDIZETOCARBOXYLICACIDSUNDERCERTAINCONDITIONSERROR,ALCOHOLSCANNOTBEOXIDIZEDTOALDEHYDESUNDERCERTAINCONDITIONS,BUTALDEHYDESCANOXIDIZETOCARBOXYLICACIDSUNDERCERTAINCONDITIONS7CH4OANDC3H8ODEHYDRATEUNDERCONCENTRATEDSULFURICACIDANDOBTAIN7KINDSOFORGANICPRODUCTSATMOSTCORRECT6ETHERS,ONEALKENETHEREARE5POSSIBLESTRUCTURESINWHICH8MOLECULESAREC5H10OLEFINSCORRECT9MOLECULARFORMULAISC8H14O2,ANDTHEREARE7KINDSOFESTERSCONTAININGSIXMEMBEREDCARBONRINGSINTHESTRUCTURECORRECTWHEN10EQUALMASSMETHANE,ETHYLENEANDACETYLENEAREFULLYBURNED,THEAMOUNTOFOXYGENCONSUMEDISFROMMUCHTOLESSCORRECT,SAMEQUALITYHYDROCARBONS,THEGREATERTHERATIOOFH,THEMOREOXYGENCONSUMEDBYCOMBUSTION11COTTONANDRAYONARETHEMAININGREDIENTSOFCELLULOSERIGHTCOTTON,RAYON,RAYON,CELLOPHANEARECELLULOSE12,THECHEMICALSTABILITYOFPOLYTETRAFLUOROETHYLENEISGOOD,ANDITSMONOMERISUNSATURATEDHYDROCARBON,THENATUREISLIVELYWRONG,THEMONOMERISTETRAFLUOROETHYLENE,UNSATURATEDTHEHYDROLYSISPRODUCTSOF13ESTERSAREONLYACIDSANDALCOHOLSFOURNITROSUBSTITUENTSOFMETHANEHAVE3KINDSTHEHYDROLYSISPRODUCTSOFESTERSMAYALSOBEACIDSANDPHENOLS14FORMICACIDDEHYDRATIONCANGETCO,CO,UNDERCERTAINCONDITIONSANDNAOHREACTIONHCOONA,SOCOISFORMICACIDANHYDRIDETHEACIDANHYDRIDEOFFORMICACIDISHCO2O15APPLICATIONOFSUBSTITUTION,ADDITION,REDUCTION,OXIDATIONANDOTHERTYPESOFREACTIONSMAYLEADTOHYDROXYLGROUPSINORGANICMOLECULESCORRECT,REPLACELUDAITING,ADDXITING,REDUCEQUANJI,OXIDIZEALDEHYDEGROUPTOACID,ALSOINTRODUCEOH16BYNATURALRUBBERMONOMER2METHYL1,3BUTADIENEWITHTHEAMOUNTOFMATERIAL,BROMINEADDITIONREACTION,THEREARETHREEPOSSIBLEPRODUCTSYES,1,2,1,4,3,4THREEADDITIVEMETHODS17BENZENEMIXEDWITHCYCLOHEXENE,INADDITIONAFTERREMOVALOFLIQUIDBROMINEWRONG,BENZENEAND1,2DIBROMETHANECANDISSOLVE18PROPYLENECANBEOBTAINEDBYHEATING2PROPANOLWITHSODIUMBROMIDEANDSULFURICACIDERRORWILLGET2BROMOPROPANE19MIXEDINETHYLBROMIDEETHANOLAMOUNTCANBEADDEDTOREMOVEHYDROBROMICACIDCORRECT,INSTEADOFTHESUBLIQUID20THEMETHODOFCARBONIZATIONCANSEPARATEAROMATICCOMPOUNDSSUCHASBENZENEFROMCOALTARTHEERRORSHOULDBEFRACTIONALDISTILLATION21GLYCINEANDGLUTAMICACID,BENZENEANDNAPHTHALENE,ACRYLICACID,OLEICACID,GLUCOSEANDMALTOSEARENOTHOMOLOGOUSTOEACHOTHERMISTAKE,ACRYLICACIDANDOLEICACIDAREHOMOLOGUES22GASOLINE,GAS,ACTIVATEDCARBON,AMMONIA,CRUDECARBOLICACID,CCL4,COKEOVENGASCANMAKEWATERFADERIGHT,GASOLINE,GAS,COKEOVENGASADDITIONACTIVATEDCARBONADSORPTION,CRUDEAMMONIAALKALI,PHENOLSUBSTITUTED,CCL4EXTRACTION23PHENOLREACTSWITHCAUSTICSODAANDREACTSWITHNITRICACIDCORRECT24ATROOMTEMPERATUREETHANOL,ETHYLENEGLYCOL,GLYCERINANDPHENOLCANDISSOLVEINWATERATANYPROPORTIONPHENOLISDIFFICULTTODISSOLVEINWATERATNORMALTEMPERATURE25USINGNITRICACIDNITRATIONPROPERTIESCANBEPREPARED,NITROBENZENE,NITROGLYCERINE,NITROCELLULOSEMISTAKE,NITROGLYCERINEANDNITROCELLULOSEISPREPAREDBYESTERIFICATIONTHE26FORMULAC8H16O2ORGANICX,HYDROLYSISOFTWOKINDSOFSTRAIGHTCHAINPRODUCTSCONTAININGSIDECHAIN,ISTODOX7THECARBONNUMBEROFTHEACIDALCOHOLEQUALSTHECARBONNUMBEROFTHEESTER271,2,TWO,DICHLOROETHANE,1,1,TWOCHLOROPROPANEANDCHLOROBENZENEAREHEATEDINNAOHALCOHOLSOLUTIONTOFORMACETYLENE,PROPARGYLANDALKYNERESPECTIVELYWRONG,THEREISNOSUCHTHINGASBENZENE28FORMALDEHYDEPOLYMERIZATIONTOPRODUCEPOM,ETHYLENEGLYCOLTOELIMINATETHEFORMATIONOFEPOXYETHER,METHYLMETHACRYLATECONDENSATIONTOFORMORGANICGLASSERROR,ETHYLENEGLYCOLISSUBSTITUTEDTOPRODUCEEPOXYETHER,METHYLMETHACRYLATEISADDEDTOFORMORGANICGLASS29SILVERMIRRORREACTIONSCANOCCURINFORMALDEHYDE,ACETALDEHYDE,FORMICACID,FORMATE,FORMATE,GLUCOSE,FRUCTOSE,MALTOSE,ANDSUCROSEERROR,SUCROSEISNOTAREDUCINGSUGAR,NOSILVERMIRRORREACTIONOCCURS30,ACETYLENE,POLYACETYLENE,ETHYLENE,POLYETHYLENE,TOLUENE,ACETALDEHYDE,FORMICACIDANDACETICACIDCANMAKEKMNO4HAQFADEWRONG,POLYETHYLENE,ACETICACIDCANMAKEPOTASSIUMPERMANGANATEACIDSOLUTIONKNOWLEDGEMODULEOFCHEMICALEXPERIMENT1SILVERAMMONIASOLUTION,COPPERHYDROXIDESUSPENSION,HYDROGENSULFATEANDOTHERREAGENTSSHOULDNOTBESTOREDFORALONGTIME,SHOULDBEPREPAREDWHENUSINGRIGHTTHESILVERAMMONIASOLUTIONISEASYTOPRODUCEAG3NFORALONGTIMEITISEXTREMELYEXPLOSIVE2AFTERTHEOXYGENHASBEENCOMPLETED,THEGASTANKSHOULDBETAKENOUTFIRST,THENTHECATHETERWILLBETAKENOUT,ANDTHENTHEHEATERWILLBESTOPPEDCORRECT3FUCHSINTESTPAPER,TESTPAPEROFLEADACETATE,PHPAPER,LITMUSPAPERMUSTFIRSTUSEDISTILLEDWATERWETTINGBEFOREUSEERROR,PHTESTPAPERISNOTWETTED4WHENTITRATINGANUNKNOWNNAOHSOLUTIONWITHSTANDARDHYDROCHLORICACID,THECONICALFLASKUSEDSHALLNOTBEWASHEDWITHANUNKNOWNNAOHSOLUTIONCORRECT5INORDERTOPREVENTTHEVOLATILIZATIONOFAMMONIA,HYDROFLUORICACID,BLEACHINGPOWDER,LIQUIDBROMINE,GASOLINEANDETHYLACETATEAREREQUIREDTOSEALPRESERVATIONWRONG,BLEACHINGPOWDERISNOTVOLATILE,BUTPERISHABLE,SOITNEEDSSEALINGPRESERVATION6,CONCENTRATEDH2SO4STAINEDONTHESKIN,SHOULDBEIMMEDIATELYWASHEDWITHWATER,ANDTHENWIPEWITHDRYCLOTH,ANDFINALLYCOATEDWITHNAHCO3SOLUTIONERROR,WIPEWITHDRYCLOTHFIRST,RINSEWITHWATER,ANDTHENAPPLYNAHCO3SOLUTIONA725MLBURET,WHERETHESURFACESCALEIS12,WHICHISCONTAINEDINTHELIQUIDVOLUMEISGREATERTHAN1300MLCORRECT8KMNO4SOLUTIONACCURATEQUANTITYOF2500ML,AVAILABLE50MLBURETTEERROR,APPLICATIONOFACIDBURETTEWHENTHELIQUIDISDIVIDEDINTO9PARTS,THELIQUIDINTHEMIDDLEPARTOFTHESEPARATINGFUNNELISRELEASEDFROMTHELOWEROPENING,ANDTHEUPPERLIQUIDISPOUREDOUTFROMTHEUPPEROPENINGCORRECT10WHENDISTILLING,THETHERMOMETERMERCURYBULBSHOULDBENEARTHEDISTILLINGFLASKINLETANALYZETHEPOSITIONOFTHEMERCURYBULBINTHEFOLLOWINGEXPERIMENTALTHERMOMETERDETERMINATIONOFSOLUBILITY,ETHYLENE,NITROBENZENE,BENZENESULFONICACID,PHENOLICRESIN,PHENOL,CCL4,ANDCOKEOVENGASCANMAKEWATERFADERIGHT,GASOLINE,GAS,COKEOVENGASADDITIONACTIVATEDCARBONADSORPTION,CRUDEAMMONIAALKALI,PHENOLSUBSTITUTED,CCL4EXTRACTION23PHENOLREACTSWITHCAUSTICSODAANDREACTSWITHNITRICACIDCORRECT24ATROOMTEMPERATUREETHANOL,ETHYLENEGLYCOL,GLYCERINANDPHENOLCANDISSOLVEINWATERATANYPROPORTIONPHENOLISDIFFICULTTODISSOLVEINWATERATNORMALTEMPERATURE25USINGNITRICACIDNITRATIONPROPERTIESCANBEPREPARED,NITROBENZENE,NITROGLYCERINE,NITROCELLULOSEWRONG,NITROGLYCERINEANDNITROCELLULOSEISPREPAREDBYESTERIFICATIONTHE26FORMULAC8H16O2ORGANICX,HYDROLYSISOFTWOKINDSOFSTRAIGHTCHAINPRODUCTSCONTAININGSIDECHAIN,ISTODOX7THECARBONNUMBEROFTHEACIDALCOHOLEQUALSTHECARBONNUMBEROFTHEESTER271,2,TWO,DICHLOROETHANE,1,1,TWOCHLOROPROPANEANDCHLOROBENZENEAREHEATEDINNAOHALCOHOLSOLUTIONTOFORMACETYLENE,PROPARGYLANDALKYNERESPECTIVELYWRONG,THEREISNOSUCHTHINGASBENZENE28FORMALDEHYDEPOLYMERIZATIONTOPRODUCEPOM,ETHYLENEGLYCOLTOELIMINATETHEFORMATIONOFEPOXYETHER,METHYLMETHACRYLATECONDENSATIONTOFORMORGANICGLASSERROR,ETHYLENEGLYCOLISSUBSTITUTEDTOPRODUCEEPOXYETHER,METHYLMETHACRYLATEISADDEDTOFORMORGANICGLASS29SILVERMIRRORREACTIONSC