Citation: Xin Hu, Fuling Yin, Jun Yang, Ming Zhao. Determination of Alkali Hydroxide Concentration Based on Green Consideration[J]. University Chemistry, ;2021, 36(6): 200606. doi: 10.3866/PKU.DXHX202006067 shu

Determination of Alkali Hydroxide Concentration Based on Green Consideration

Xin Hu ¹ ,
Fuling Yin ² ,
Jun Yang ¹ ,
Ming Zhao ^2,,

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

Corresponding author: Ming Zhao, sunmoonzhao@bjmu.edu.cn
Received Date: 23 June 2020

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.
- Determination,
- Concentration,
- Potassium hydroxide,
- Aqueous solution,
- Green consideration
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