Study on Preparation and Properties of Buffer Solution by Digital Experiment of Handheld Technology
ZHENG Hai-Peng1, CHEN Bo2*
1. College of Chemistry and Civil Engineering, Shaoguan University, Shaoguan 512005, China; 2. School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
Abstract In view of the problems that the experimental content of buffer solution in the basic chemistry course of our school is too simple and the comparison is not obvious, in order to make the students of clinical medicine majors better understand the properties of buffer solution, the author improves the buffer solution experiment, and tries to introduce the pH sensor and the drop sensor in the digital experimental equipment of handheld technology to improve the preparation and properties of buffer solution. The ability of acid resistance, alkali resistance and dilution resistance of buffer solution under different buffer ratios and different buffer total concentrations is compared, and the corresponding pH-V curve is drawn, which is helpful to deepen students' understanding of the nature and function of buffer solution.
ZHENG Hai-Peng, CHEN Bo. Study on Preparation and Properties of Buffer Solution by Digital Experiment of Handheld Technology[J]. Chinese Journal of Chemical Education, 2023, 44(20): 99-104.
