介绍一款寒剂

Introduction to a Cold Agent

随着人们生活水平的提高,清洁、靓丽、优雅的工作环境是人们追求的目标,大专院校物理化学实验《凝固点降低法测定物资摩尔质量》以往用苯或环己烷作为溶剂,萘作为溶质测定物资摩尔质量的实验教学方法逐渐被淘汰,新的方法相继出现。文章介绍一款环保,经济,实用的寒剂,质量分数为4.0%~5.0%的氯化钠水溶液结晶体寒剂的制作方法。

With the improvement of people＇s living standard, clean, beautiful, elegant work environment is people＇s pursuit of the goal, College of physical chemistry experiment ＂the freezing point reduction method measuring material molar mass＂ in the past with benzene or cyclohexane as solvent, naphthalene as solute determination of material molar mass experiment teaching method will be eliminated gradually, new methods have appeared. The paper presents a method for the production of crystalline body of 4.0 %-5.0 % sodium chloride aqueous solution with environmental protection, economic, practical, and practical application.