chapterxxtitle-oneonta：第xx标题-奥尼昂塔

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1、Chapter18PrecipitationandComplexationEquilibriaSY7/10/21Chapter1818.1SolubilityEquilibriaandKsp18.2UsingKspInCalculations18.3LewisAcid–BaseComplexesandComplexIonEquilibria18.4SimultaneousEquilibriaFigureIdeas:ChapterGoals··Chapter18:PrecipitationandComplexationEqu

2、ilibriaChapterInContextThisisthefinalchapterinourstudyofchemicalequilibria.Afterstudyingacid–baseequilibriainsomedepth,wenowturntoequilibriainvolvingsparinglysolublecompoundsandtheequilibriaofLewisacid–basecomplexes.Youwerefirstintroducedtosparinglysolublecompound

3、sinChapter5whenwecoveredprecipitationreactionsandsolubleandinsolubleioniccompounds.Wewilldiscoverinthischapterthateveninsolubleioniccompoundsdissolveinwatertoasmallextent,andthatthissolubilitycanbeaffectedbyavarietyofchemicalspecies.Lewisacidsandbaseswerebrieflyin

4、troducedinChapter16.HerewewilllookatequilibriainvolvingLewisacid–basecomplexesandhowtheycanbeusedtoinfluencethesolubilityofioniccompounds.Needalittleintrotexthere·Biology:Biologicalsystemsarerifewithexamplesofprecipitationandcomplexationchemistry.Theformationofsea

5、shellsandcoralinvolveprecipitationofcalciumcarbonate,CaCO3.ThetransportofoxygeninourbodiesdependsonthecomplexationofhemeFeatomswithO2molecules.ThetransportofironitselfinthebodyinvolvescomplexationofFe2+ionsbyspecialiron–transportproteins.(needtochecktoseeifthat’st

6、rue,orifthat’swhattheyarecalled–bv)(also,lookintoradiationtreatmentwhereiodineisusedtotreatradiationpoisoning,andalsoheavymetalcontaminationtreatment,wherechelatingagentsareusedtobindupthosenastyions).·EnvironmentalStudies/Industry:Theformationofcavesandtheinteres

7、tingstructureswithinthemistheresultofacombinationofprecipitationreactionscoupledwithLewisacid–basereactionsandBrønsted-Lowryacid–basereactions.Cavesformwhenacidicwaterencounterslimestone(CaCO3)rockformationsunderground.ThesourceofacidinthewaterismostoftenCO2formed

8、bydecomposingorganicmatterintheoverlyingsoil.TheCO2undergoesaLewisacid–basereactiontoformcarbonicacid,whichundergoesaBrønsted-Lowryacid–basereactionwith