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本文续前报在恒定溶液总离子强度I=1.00mol·kg~(-1),改变葡萄糖在混合溶液中的质量百分数x=5%、15%和20%的条件下,应用电动势法测定了无液接界电池(A)和电池(B)的电动势: Pt,H_2(1.013×10~5Pa)|HCl(m),d-Glucose(x),H_2O(1-x)|AgCl-Ag (A) Pt,H_2(1.013×10~5Pa)|HCl(m_A),NaCl(m_B),d-Glucose(x),H_2O(1-x)|AgCl-Ag(B) 其中x代表葡萄糖在水中的质量百分数,m_A和m_B分别是HCl和NaCl在混合溶液中的质量摩浓度。利用电池(A)的电动势数据得到了AgCl-Ag电极在d-Glucose-H_2O混合溶液中的标准电极电势Φ_m~0,讨论了HCl的迁移性质,利用电池(B)的电动势数据,确定了HCl在HCl-NaCl-d-Glucse-H_2O体系中的活度系数γ_A,实验结果表明:在恒定总离子强度下,HCl的活度系数服从Harned规则。HCl的迁移自由能与葡萄糖的质量百分数x成线性关系。计算了HCl
This paper reported in the constant solution before the total ionic strength I = 1.00mol · kg -1, changing the mass percentage of glucose in the mixed solution x = 5%, 15% and 20% of the conditions, the application of electromotive force method was measured Electromotive force of non-liquid junction battery (A) and battery (B): Pt, H 2 (1.013 × 10 -5 Pa) | HCl (m), d-Glucose (x), H 2 O (1-x) | AgCl-Ag A) Pt, H 2 (1.013 × 10 -5 Pa) | HCl (m_A), NaCl (m_B), d-Glucose (x), H_2O (1-x) | AgCl-Ag (B) where x represents glucose in water The mass percentages, m_A and m_B, are the mass concentrations of HCl and NaCl, respectively, in the mixed solution. The standard electrode potential Φ_m ~ 0 of AgCl-Ag electrode in d-Glucose-H_2O mixed solution was obtained by using the electromotive force data of battery (A). The migration properties of HCl were discussed. Using the electromotive force data of battery (B) The activity coefficient γ_A in HCl-NaCl-d-Glucse-H_2O system shows that under the constant total ionic strength, the activity coefficient of HCl obeys Harned’s rule. The free mobility of HCl is linearly proportional to the mass percentage x of glucose. Calculated HCl