盐酸在蔗糖水溶液中表观热力学性质的研究

Study on Apparent Thermodynamic Properties of HCl in Mixed Solutions——The System of HCl-Sucrose-H_2O at 278.15 to 318.15K

在恒定蔗糖质量分数x =0 .1 0 0条件下 ,应用经典电动势方法测定无液体接电池的电动势 :Pt,H2 (1 .0 1 3× 1 0 5Pa) |HCl(m) ,Sucrose(x) ,H2 O(1 -X) |AgCl-Ag根据测得该电池的电动势 ,确定了混合溶液中AgCl-Ag电极的标准电极电势 。

The Apparent thermodynamic properties of HCl-Sucrose-H 2O system were studied by means of emf measurements of the cell without liquid junction. Pt,H 2(1.013×10 5Pa)｜HCl( m ),Sucrose ( x), H 2O(1- X)｜ AgCl-Ag at the mass fraction of Sucrose x =0.100 in the mixed solution, from 278.15 to 318.15K for cell. The standard electrode potential of Ag-AgCl in the mixed solution has been determined from the values of emf. The standard transfer Gibbs free energies, transfer entropy, and transfer enthalpy of HCl have been calculated.