The freezing point depression method for determining the molar mass of substances is a classic experiment in physical chemistry experiments,which provides a method for measuring the molar mass of anelectrolyte.For many years,the teaching improvement of this experiment has mainly focused on the greening of the solution system and the improvement of the equipment.There has been no improvement in the principle part of the experiment.This article introduces strong electrolysis into the experiment,and through the experimental results,compares the degree of solidification point depression between anelectrolyte and strong electrolyte dilute solutions,allowing students to deeply understand the"dependence"of dilute solutions and supplementing the theoretical knowledge in this part of the book.At the same time,students'interest in scientific exploration and independent thinking ability is increased.
关键词
非电解质/强电解质/凝固点降低/范特霍夫因子
Key words
non electrolyte/ntrong electrolyte/freezing point depression/vanterhoff coefficient
维普
万方数据