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Citation: Tiejun Su. A case study on analytical chemistry instructional design from the perspective of chemical measurement[J]. University Chemistry, ;2026, 41(6): 79-83. doi: 10.12461/PKU.DXHX202511198 shu

A case study on analytical chemistry instructional design from the perspective of chemical measurement

Tiejun Su ^1,2,,

1.
School of Medicine and Health Sciences, Jingzhou University, Jingzhou 434020, Hubei Province, China;
2.
Virtual Teaching and Research Section of Analytical Chemistry Course, Changsha 410082, Hunan Province, China

Corresponding author: Tiejun Su, sutj06@sina.com
Received Date: 30 November 2025
Revised Date: 6 February 2026

From the perspective of chemometrics, this study employs the titration of HCl with NaOH as an example to integrate three teaching modules: plotting titration curves, selecting indicators, and calculating endpoint errors. The designed problem-driven teaching approach follows this sequence: first posing the question of endpoint determination after curve plotting, then examining measurement accuracy concepts and indicator selection principles, and finally computing endpoint errors for different indicators based on proton conservation principles. This methodology aids students in constructing an accuracy-centered analytical chemistry framework while enhancing scientific reasoning skills. Additionally, it serves as a foundational template for instructors to adapt to other titration analysis teaching scenarios.
- Accurate measurement,
- Acid-base titration,
- Problem-driven,
- Teaching design
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