摘要
介绍莫尔法和荧光黄法测定生理盐水中氯化钠含量的实验原理和操作步骤,针对无机及分析化学实验教学中测定氯含量实验的原理、指示剂、标准溶液、滴定条件及适用范围等内容进行比较和分析,阐明了不同实验方法与操作步骤之间的对应关系。学生根据预习实验,结合具体实验操作、实验现象和实验结果的对比,可以充分直观地理解实验内容,掌握无机及分析化学实验的学习方法,提高学生的发现问题和解决问题的能力。
This paper introduced the experimental principles and operation steps of the determination of chlorion by silver measuring method, compared and analyzed the indicators, standard solution, titration conditions, considerations and scope of application. And this paper also discussed the correspondence between the experimental methods and operation steps.On the basis of experiment preparation, operation, phenomena, records and results, students could better understand the contents of the chemical experiments,master the study methods for inorganic & analytical chemistry experiment,as well as enhance their innovation ability and practical ability.
引文
[1] 何智宇,涂友良.广东化工,2017,44(2):136,143
[2] 黄红菱,刘金池,范文杰,等.化学教育,2016,37(22):30-32
[3] 胡米宁.物理实验,2000,20(8):27-28
[4] 王新兵,王航宇,邓喜玲,等.卫生职业教育,2017,35(8):76-77
[5] 南京大学《无机及分析化学实验》编写组.无机及分析化学实验.5版.北京:高等教育出版社,2015:161-165
[6] 祝陈坚.海水分析化学实验.青岛:中国海洋大学出版社,2006:4-8