大学化学 >> 2021, Vol. 36 >> Issue (12): 2101007.doi: 10.3866/PKU.DXHX202101007

化学实验 上一篇    下一篇

电动势法测定硫酸铜的离子迁移数

孟德坤, 周南, 林世泉, 周爱秋, 林猛(), 张树永   

  • 收稿日期:2021-01-05 录用日期:2021-02-22 发布日期:2021-02-22
  • 通讯作者: 林猛 E-mail:mlin@sdu.edu.cn
  • 作者简介:林猛, Email: mlin@sdu.edu.cn
  • 基金资助:
    山东大学教育教学改革项目(2020Y229)

Determination of Ion Transference Number by Electromotive Forces Method

Dekun Meng, Nan Zhou, Shiquan Lin, Aiqiu Zhou, Meng Lin(), Shuyong Zhang   

  • Received:2021-01-05 Accepted:2021-02-22 Published:2021-02-22
  • Contact: Meng Lin E-mail:mlin@sdu.edu.cn

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摘要：

离子迁移数作为物理化学的重要参数，其测定是大学物理化学实验中的基础内容。以基础物理化学实验中离子迁移数的测定为基础，结合电动势的测定等实验，设计建立了一套电动势法测量溶液中铜离子与硫酸根离子迁移数的实验装置，得到的离子迁移数与文献值基本一致。尝试基于大学生在物理化学实验中已掌握的实验技能，综合电化学学科领域的知识，设计探索电动势测量离子迁移数的新方法，有助于提升学生对知识的综合运用能力。

关键词: 离子迁移数, 电动势法, 半透膜

Abstract:

Ion transference number is an important parameter of physical chemistry, and its measurement is the basic content in physical chemistry laboratory. Based on the measurement of ion transference number in "Basic Physical Chemistry Laboratory", combined with measurements of the electromotive force, a new experiment was designed for measuring the transference number of copper ion and sulfate ion in solution, and the ion transference numbers obtained are basically consistent with the values in the literature. We attempt to use the laboratory skills that college students already mastered in physical chemistry laboratory and integrate the knowledge of electrochemistry to design and explore a new method for measuring ion transference by the electromotive force method. The students' comprehensive ability can be improved to solve problems.

Key words: Ion transference number, Electromotive force method, Semi-permeable membrane