大学化学 >> 2021, Vol. 36 >> Issue (6): 2006067.doi: 10.3866/PKU.DXHX202006067

化学实验 上一篇    下一篇

基于绿色考虑的碱金属氢氧化物浓度的测定

胡新1, 尹富玲2, 杨军1, 赵明2,*()   

  1. 1 药学国家级实验教学示范中心(北京大学), 北京 100191
    2 北京大学药学院, 化学生物学系, 北京 100191
  • 收稿日期:2020-06-23 录用日期:2020-08-19 发布日期:2020-09-16
  • 通讯作者: 赵明 E-mail:sunmoonzhao@bjmu.edu.cn
  • 作者简介:第一联系人:

    并列第一作者

Determination of Alkali Hydroxide Concentration Based on Green Consideration

Xin Hu1, Fuling Yin2, Jun Yang1, Ming Zhao2,*()   

  1. 1 National Demonstration Center for Experimental Pharmacy Education in Peking University, Beijing 100191, China
    2 Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
  • Received:2020-06-23 Accepted:2020-08-19 Published:2020-09-16
  • Contact: Ming Zhao E-mail:sunmoonzhao@bjmu.edu.cn
  • About author:赵明, Email: sunmoonzhao@bjmu.edu.cn

摘要:

经典实验“碱金属氢氧化物浓度的测定”被广泛应用于化学工业和药物产业,以及大学化学实验教学。因此,处理滴定产生的溶液和防止其造成环境的污染对于化学实验教学和工业过程是非常重要的。基于绿色的考虑,我们选取了目视比色法和电位滴定法测定氢氧化钾的浓度作为化学教学实验。滴定所产生的溶液能够被用于直接浇灌植物白鹤芋。此教学实验将帮助学生获得基于绿色思维设计化学实验的方法,同时激发他们学习化学课程的兴趣。

关键词: 测定, 浓度, 氢氧化钾, 水溶液, 绿色考虑

Abstract:

The classic experiment "determination of alkali hydroxide concentration" is widely used in chemical and pharmaceutical industries, as well as in university chemistry laboratory teaching. Therefore, disposal of the solutions produced by titration and prevention of their environmental pollution are very important in chemistry laboratory teaching, as well as in the industrial processes. We have selected the methods of visual colorimetry and potentiometric titration to determine potassium hydroxide concentration as an experiment for chemistry lab teaching based on green consideration. The solution produced by titration can be used directly in irrigating the plant, Spathiphyllum kochii. The teaching experiment will help students acquire methods for designing chemical experiments based on green consideration and inspire their interests of learning chemical courses.

Key words: Determination, Concentration, Potassium hydroxide, Aqueous solution, Green consideration

MSC2000: 

  • G64