文章以酒精溶液、NaCl 溶液和蔗糖溶液为研究对象,迈克尔逊干涉仪为载体,采用滴定法研究了以上溶液在 20 ℃环境下的折射率与其浓度之间的关系。通过拟合浓度与折射率之间的变量关系,运用积分运算得到折射率 n 随浓度 c 变化的函数关系 n(c),进而给出溶液在任意浓度的折射率。该实验既可作为大学物理设计性实验或拓展实验,培养学生的动手能力和创新能力,也可运用于测量溶液在不同浓度下的折射率,具有较好的应用前景。
With alcohol solution,NaCl solution and sucrose solution as research objects and Michelson interferometer as carrier,the relationship between refractive index and concentration of these solutions at 20 ℃ was studied by titration.By fitting the variable relationship between the concentration and the refractive index, the functional relationship n(c)of the refractive index n with the concentration c is obtained by integral operation,and then the refractive index of the solution at any concentration is given.This experiment can not only be used as a design experiment or an extension experiment of college physics to cultivate students’ practical ability and innovative ability,but also can be used to measure the refractive index of solutions at different concentrations.It would have a good prospect in application.
向 倩, 丁益民 , 李 政, 杨翔宇.
基于滴定法探究溶液浓度与折射率的关系
[J]. 大学物理实验, 2023, 36(1): 23-28.
XIANG Qian, DING Yimin , LI Zheng, YANG Xiangyu.
A Study on the Relationship between Solution Concentration and Refractive Index Based on Titration
. Physical Experiment of College, 2023, 36(1): 23-28.