引入强电解质改进凝固点降低法测定物质摩尔质量实验  

Bringing Strong Electrolytes in the Experiment of Admeasurement Molar Mass of Substances by Freezing Point Depression Method

作　　者：罗利平 王彩霞 韩彦双 李家希 陆昌爱 岳凡 陈华梅 LUO Liping;WANG Caixia;HAN Yanshuang;LI Jiaxi;LU Chang′ai;YUE Fan;CHEN Huamei(School of Energy and Chemical Engineering,Xinjiang Institute of Technology,Aksu 843100,China;Management Committee of Wensu Industrial Park in Aksu Region,Aksu 843100,China)

机构地区：[1]新疆理工学院能源化工工程学院,新疆阿克苏843100 [2]新疆阿克苏地区温宿产业园区管委会,新疆阿克苏843100

出　　处：《山东化工》2024年第21期167-170,共4页Shandong Chemical Industry

基　　金：新疆理工学院高层次人才科研启动基金项目(编号:XJLG2023G002)。

摘　　要：凝固点降低法测定物质摩尔质量是物理化学实验中的经典实验,该实验为测量未知非电解质物质的摩尔质量提供了一种方法。多年来,对本实验的教学改革主要对溶液体系的绿色化和装置进行改进,没有对实验的原理部分进行改进,为使学生对“依数性”有深入的认识,将强电解质引入到该实验中,通过实验结果,对比非电解质与强电解质稀溶液凝固点降低程度,不仅强化了学生对稀溶液“依数性”的理解,还对教材中该部分理论知识进行补充。同时,增加了学生科学探索的兴趣和独立思考能力。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 

分 类 号：TQ016[化学工程]