The emf of cell（A）without liquid junction was determined with 10%mass%urea-water mixed solvent in the temperature range 278.15-318.15K: Pt,H2（101.325KPa） HCl（ml）,H2SO4（m2）,urea（10%）-H2O AgCl-Ag Then,accordin...The emf of cell（A）without liquid junction was determined with 10%mass%urea-water mixed solvent in the temperature range 278.15-318.15K: Pt,H2（101.325KPa） HCl（ml）,H2SO4（m2）,urea（10%）-H2O AgCl-Ag Then,according to the emf data of cell,the second dissociation constant K2 of sulfuric acid in the mixed solvent was determined. The thermodynamic quatlities of the second dissociation process of sulfuric acid and the effect of solvent dielectric constant on K2 were discussed.展开更多
文摘The emf of cell（A）without liquid junction was determined with 10%mass%urea-water mixed solvent in the temperature range 278.15-318.15K: Pt,H2（101.325KPa） HCl（ml）,H2SO4（m2）,urea（10%）-H2O AgCl-Ag Then,according to the emf data of cell,the second dissociation constant K2 of sulfuric acid in the mixed solvent was determined. The thermodynamic quatlities of the second dissociation process of sulfuric acid and the effect of solvent dielectric constant on K2 were discussed.
