University Chemistry ›› 2022, Vol. 37 ›› Issue (2): 2105058.doi: 10.3866/PKU.DXHX202105058

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• Chemistry Laboratory • Previous Articles     Next Articles

Content Analysis of Inorganic and Organic Mixtures: A Case Study of the Compositional Analyses of Nasalcare

Yuxin Wang1, Shuyuan Ding1,2, Shoulin Zhang1, Lin Xu1, Yawen Tang1,*()   

  1. 1 School of Chemistry and Materials Science, School of Teacher Education, Nanjing Normal University, Nanjing 210023, China
    2 Haimen Middle School, Nantong 226100, Jiangsu Province, China
  • Received:2021-05-24 Accepted:2021-06-21 Published:2021-07-01
  • Contact: Yawen Tang E-mail:tangyawen@njnu.edu.cn

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Abstract:

For chemistry experimental teaching, using the common medicine in daily life as the experimental object can greatly arouse students' interest in chemistry learning. Nasalcare is a commonly commercial nasal detergent which mainly contains sodium chloride, citric acid and sodium citrate, representing a typical mixture of inorganic substances and organic substances. In this paper, a quantitative analysis method for the composition analyses of Nasalcare is designed, and the rationality is verified by experiments. This work is anticipated to provide the methodological guidance for the involvement of compositional analyses of Nasalcare experiment into the university analytical chemistry experiment class. Through this experiment, students can not only master the basic laboratory skills, such as constant weight of crucible and precipitation titration, but also have a better understanding of the method of quantitative analysis of data.

Key words: Thermal decomposition, Constant weight test, Precipitation titration, Nasalcare