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ID:59414515
大小:1.42 MB
页数:40页
时间:2020-09-19
《Title Speed and Acceleration - science-cochrane - home:标题的速度和加速度的科学循证医学家-PPT精品文ppt课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、SUMMARY:TheconcentrationsofsolutionscanbecalculatedfromtitrationdataConcentrationsareusuallymeasuresdinmolespercubicdecimetre(dm3)oringramsperdm3KEYWORDS:molesperdm3,gramsperdm32.3TitrationCalculationsOutcomes:IwilldemonstrateIunderstandatGradeCby•Compl
2、etestraightforwardcalculationsinvolvingconcentration.•Completecalculationswithresultsfromatitrationinvolvingsimpleratios.Outcomes:IwilldemonstrateIunderstandatGradeAby•Carryoutmorecomplextitrationcalculations.Objectives:Iwillunderstand•Howtocalculatecon
3、centrationfromreactingvolumes.•Howtocalculatetheamountofacidoralkaliusedinaneutralisationreaction.EXAMTIPNumberofmoles=massingramsrelativeformulamass2.Makesureyoucheckthenumberofmolesthatreactfromabalancedequation!3.Titrationsareanimportantmethodofquant
4、itativeanalysis.Theinformationcanbeusedtofindconcentrations,amounts,puritiesandformulaeofsubstances.4.Youshouldbeabletobalanceequationsforreactions,calculateamountsofsubstancesfromtitrationdataandapplytheseskillstosolveproblemsindifferentcontexts.5.Prac
5、tiseasmanycalculationsaspossible!FivestepstostraightforwardtitrationproblemsDrawyourownflowchartofinstructionsStep1tosolvingtitrationproblems…balancingequations…Thefirstonehasbeencompletedasanexample.HCl+NaOHH2O+NaClHNO3+KOH+H2SO4+NH4OH+H2OKNO3(NH4)2
6、SO42H2OStep2workingouthowmany..molesofacid/alkalireacttogether..Thefirstonehasbeencompletedasanexample.HCl+NaOHH2O+NaCl1moleofHClreactswith1moleofNaOH.HNO3+NH4OHH2O+NH4NO3H2SO4+Ca(OH)22H2O+CaSO41moleofHNO3reactswith1moleofNH4OH1moleofH2SO4reactswith1
7、moleofCa(OH)2Trydoingstep1and2yourselvesThefirstonehasbeencompletedasanexampleHowmanymolesofhydrochloricacidandpotassiumhydroxidereacttogether?Equation:HCl+NaOHH2O+NaClReactingmoles:1moleofHClreactswith1moleofNaOH.2.Howmanymolesofnitricacidandbariumhyd
8、roxidesolution,Ba(OH)2,reacttogether?3.Howmanymolesofhydrochloricacidandcalciumhydroxide,Ca(OH)2,reacttogether?2HNO3+Ba(OH)22H2O+Ba(NO3)22molesofHNO3reactswith1moleofBa(OH)22HCl+Ca(OH)22H2O+CaCl22molesofHClreactswith1moleofCa(O
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