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1、高中化學(xué)離子反應(yīng)方程式總結(jié)（Summaryofionreactionequationinhighschoolchemistry）SummaryofionreactionequationinhighschoolchemistryHowtocorrectlywritechemicalionequation,isanimportantknowledgecomprehensiveapplicationinchemistry,andthebasicconceptsofChemistry(massconservationlaw,thelawofconservatio
2、nofcharge),thebasictheoryof(electrolytesolution)andtheknowledgeofchemicalelements(mainlychemicalproperties,reactionprinciple)arecloselyrelated;mostofthestudentsisaheadachefortheionequationremember,becausethereisnowrittenrules,confusethestrongelectrolyte,weakelectrolyte,butwriting
3、ionequationofrightandwrong,istheannualcollegeentranceexaminationwillbeoutofthequestion.Fromthecontentoftheproposition,therearethreeaspects:HighschoolchemistryionreactionequationwordfreedownloadI.commontypesofionreactionsTwo.RulesforwritingionicequationsThree,judgmentmethodofwriti
4、ngionequationofrightandwrongFour.SummarizethetypesofionreactionsFive,writetheprinciplesofionicequationcorrectlyI.commontypesofionreactions:1,doubledecompositionreactiontypeion:example:Ag++Cl-=AgCl:2H++CO32-=CO2=+H2O2,thereplacementreactiontype:example:Zn+2H+=Zn2++H2=Cl2+2I-=2Cl-+
5、I23,hydrolysisofsalttype:example:H2O+H+CH3COO-+H2O==CH3COOH+0H-NH4H2O==NH34,complexoxidationprototype:MnO4-+5Fe2++8H+=5Fe3++Mn2++4H2OThereisalsoanionreactioninthecomplexwhenthecompoundispresent.Two.Rulesforwritingionicequations:1,wecanonlywritestrongions(strongelectrolytesinwater
6、),andotherions(includinginsolubleandstrongelectrolytes)arewritteninmolecularform.Suchascalciumcarbonateandhydrochloricacidreaction:CaCO3+2H+=Ca2++CO2=+H2Osorememberwhichsubstancesarestrongelectrolyte,whichstrongelectrolytecandissolveinwateristhefoundationandkeyofwritingionequatio
7、n.2.Anionicreactionthatdoesnotreactinaqueoussolution;cannotwriteanionicequation.SuchasthereactionofcopperwithconcentratedH2SO4,thereactionofconcentratedH2SO4withthecorrespondingsolidsubstance,thereactionofHCI,HFandHNO3,andthereactionofCa(OH)2andNH4CltoNH3.3.Althoughalkalineoxides
8、arestrongelectrolytes,theycanonlybewritt
