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

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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+NaOHH2O+NaClHNO3+KOH+H2SO4+NH4OH+H2OKNO3(NH4)2

6、SO42H2OStep2workingouthowmany..molesofacid/alkalireacttogether..Thefirstonehasbeencompletedasanexample.HCl+NaOHH2O+NaCl1moleofHClreactswith1moleofNaOH.HNO3+NH4OHH2O+NH4NO3H2SO4+Ca(OH)22H2O+CaSO41moleofHNO3reactswith1moleofNH4OH1moleofH2SO4reactswith1

7、moleofCa(OH)2Trydoingstep1and2yourselvesThefirstonehasbeencompletedasanexampleHowmanymolesofhydrochloricacidandpotassiumhydroxidereacttogether?Equation:HCl+NaOHH2O+NaClReactingmoles:1moleofHClreactswith1moleofNaOH.2.Howmanymolesofnitricacidandbariumhyd

8、roxidesolution,Ba(OH)2,reacttogether?3.Howmanymolesofhydrochloricacidandcalciumhydroxide,Ca(OH)2,reacttogether?2HNO3+Ba(OH)22H2O+Ba(NO3)22molesofHNO3reactswith1moleofBa(OH)22HCl+Ca(OH)22H2O+CaCl22molesofHClreactswith1moleofCa(O