分析化学第二次作业答案2014.ppt

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1、MaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide1of87AnalyticalchemistryExercisesandsolutionsMaQuanhongMaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide2of87ExerciseQuantitativeChemistryAnalysis：P48：2.5MaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide3of87ExerciseQuantitativ

2、eChemistryAnalysis：P48：2.7MaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide4of87ExerciseQuantitativeChemistryAnalysis：P48：2.7AMaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide5of87ExerciseQuantitativeChemistryAnalysis：P49：2.10(1)n=4,QTab,0.95=0.85∴Qc=0.60

3、eretainedSlide5of87MaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide6of87ExerciseQuantitativeChemistryAnalysis：P49：2.10(2)n=4,QTab,0.95=0.85∴Qc=0.89>QTab,0.95=0.85∴7.388shouldberejected.Slide6of87MaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide7of87ExerciseQuantitativeChemistryAnal

4、ysis：P49：2.12Slide7of87MaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide8of87Exercise分析化学（华东理工）P27思考题6:∵取样3.5g，故最终实验结果的有效数字为2位∴甲的报告是合理的P27习题1:∵称量时需称2次∴称量误差：±0.2mgMaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide9of87Exercise分析化学（华东理工）P28习题6(Grubbs的置信度为95%，书上没有置信度90%的数据)∴8.69%shouldb

5、eretainedat95%and99%confidencelevel,respectively.MaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide10of87Exercise∴8.69%shouldberetainedat90%and99%confidencelevel,respectively.∵n=6t0.90=2.015∴∵n=6t0.99=4.032∴MaQuanhongAnalyticalchemistry:ExercisesandsolutionSlide11of87Exercise分析化学（华东理工）P28习

6、题10:(1)三位；(2)四位；(3)二位；(4)二位P28习题11: