物化实验-电池电动势的测定及其应用VIP免费

实验八、电池电动势的测定及其应用【AuthorAuthorAuthorAuthorandandandandinstitutioninstitutioninstitutioninstitutionofofofofthethethethereportreportreportreport】PB11207027PB11207027PB11207027PB11207027zhanghengzhanghengzhanghengzhanghengSchoolSchoolSchoolSchoolofofofofLifeLifeLifeLifeSciences.Sciences.Sciences.Sciences.UniversityUniversityUniversityUniversityofofofofScienceScienceScienceScienceandandandandTechnologyTechnologyTechnologyTechnologyofofofofChinaChinaChinaChina....HefeiHefeiHefeiHefeiCity.AnhuiCity.AnhuiCity.AnhuiCity.AnhuiProvince.Province.Province.Province.Postcode:230026Postcode:230026Postcode:230026Postcode:230026Email:zh322523@mail.ustc.edu.cnEmail:zh322523@mail.ustc.edu.cnEmail:zh322523@mail.ustc.edu.cnEmail:zh322523@mail.ustc.edu.cn【AbstractAbstractAbstractAbstract】InInInInthisthisthisthisexperiment,experiment,experiment,experiment,wewewewemakemakemakemakeuseuseuseuseofofofofthethethethereferencereferencereferencereferenceelectrodeelectrodeelectrodeelectrode,,,,thethethetheknownknownknownknownsolutionssolutionssolutionssolutionsandandandandsaltsaltsaltsaltbridgebridgebridgebridgetotototomeasuremeasuremeasuremeasurethethethetheelectromotiveelectromotiveelectromotiveelectromotiveforceforceforceforceofofofofthethethethecellcellcellcellbybybybyapplyingapplyingapplyingapplyingthethethethecompensationcompensationcompensationcompensationmethod.method.method.method.AndAndAndAndaccordingaccordingaccordingaccordingtotototothesethesethesethesedatadatadatadata,we,we,we,wecalculatecalculatecalculatecalculatethethethethesolubilitysolubilitysolubilitysolubilityproductproductproductproductofofofofindissolubleindissolubleindissolubleindissolublesaltsaltsaltsalt(AgCl),(AgCl),(AgCl),(AgCl),andandandandthreethreethreethreeimportantimportantimportantimportantthermodynamicthermodynamicthermodynamicthermodynamicfunctionfunctionfunctionfunction△rGm，△rSm，△rHm.【KeywordsKeywordsKeywordsKeywords】reversiblereversiblereversiblereversiblecellcellcellcellelectromotiveelectromotiveelectromotiveelectromotiveforceforceforceforceofofofofcellcellcellcellreferencereferencereferencereferenceelectrodeelectrodeelectrodeelectrodethermodynamicthermodynamicthermodynamicthermodynamicfunctionfunctionfunctionfunctionsolubilitysolubilitysolubilitysolubilityproductproductproductproductofofofofindissolubleindissolubleindissolubleindissolublesaltsaltsaltsalt【前言】原电池是由于电极发生化学反应原电池是由于电极发生化学反应原电池是由于电极发生化学反应原电池是由于电极发生化学反应，，，，而使正负极具有电势差而使正负极具有电势差而使正负极具有电势差而使正负极具有电势差。。。。通过通过通过通过对电池电动势的测量可求算某些反应的热力学函数对电池电动势的测量可求算某些反应的热力学函数对电池电动势的测量可求算某些反应的热力学函数对电池电动势的测量可求算某些反应的热力学函数，，，，电解质的平均活电解质的平均活电解质的平均活电解质的平均活度系数，难溶盐的溶度积等物理化学参数度系数，难溶盐的溶度积等物理化学参数度系数，难溶盐的溶度积等物理化学参数度系数，难溶盐的溶度积等物理化学参数....因而将一些化学反应转换因而将一些化学反应转换因而将一些化学反应转换因而将一些化学反应转换成电池成电池成电池成电池，，，，测定电动势应用广泛测定电动势应用广泛测定电动势应用广泛测定电动势应用广泛。。。。但用电动势法求上述数据时但用电动势法求上述数据时但用电动势法求上述数据时但用电动势法求上述数据时，，，，必须是必须是必须是必须是能够设...