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本文在恒定葡萄糖质量百分数 x=10%的条件下,应用电动势法测定无液体接界电池(A)和电池(B)的电动势:Pt,H_2(1.013×10~5 Pa)丨HCl(m),D-Glucose(x),H_2O(1-x)「AgCl-Ag (A)Pt,H_2(1.013×10~5Pa)丨HCl(m_A),NaCl(m_B),D-Glucose(x),H_2O(1-x)「AgCl-Ag (B)根据电池(A)电动势确定混合溶液中的 Ag-AgCl 电极的标准电极电势,讨论了 HCl 的迁移性质;利用电池(B)的电动势确定了 HCl 在该体系中的活度系数γ_A,结果表明,在恒定总离子强度下,HCl 的活度系数服从 Harned 规则.在溶液组成恒定时,lgγ_A 是温度倒数1/T 的线性函数,进一步讨论了混合物中 HCl 的相对偏摩尔焓,计算了 HCl 的介质效应.
In this paper, electrokinetic method was used to determine the electromotive force without liquid junction battery (A) and battery (B) under the condition of constant glucose mass percentage x = 10%: Pt, H 2 (1.013 × 10 ~ 5 Pa) , D-Glucose (x), H 2 O (1-x) “AgCl-Ag (A) Pt and H 2 (1.013 × 10 ~ 5Pa) (1-x) ”AgCl-Ag (B) The standard electrode potential of the Ag-AgCl electrode in the mixed solution was determined according to the electromotive force of the battery (A), and the migration property of the HCl was discussed. The activity coefficient γ_A in this system shows that at a constant total ionic strength, the activity coefficient of HCl obeys Harned’s rule. When the solution composition is constant, lgγ_A is a linear function of the reciprocal temperature 1 / T. HCl relative partial molar enthalpy, calculate the medium effect of HCl.