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Citation: Hongyi Zhang, Zhihong Shi, Zhijun Zhang. A New Strategy for “De-formulized” Calculation of Dynamic Buffer Capacity in Analytical Chemistry Education[J]. University Chemistry, ;2024, 39(3): 390-394. doi: 10.3866/PKU.DXHX202309030 shu

A New Strategy for “De-formulized” Calculation of Dynamic Buffer Capacity in Analytical Chemistry Education

1.
College of Chemistry and Materials Science, Hebei University, Baoding 071002, Hebei Province, China;
2.
Teaching Institute for Chemistry, Hebei University, Baoding 071002, Hebei Province, China;
3.
Cangzhou Risun Chemicals Co., Ltd., Cangzhou 061113, Hebei Province, China

Corresponding author: Hongyi Zhang, hyzhang@hbu.edu.cn
Received Date: 7 September 2023

Buffer capacity is an important concept in analytical chemistry. Conventional calculations often neglect volume changes that occurs when a buffer solution mixes with a sample solution, yielding what is termed “static” buffer capacity. In practical applications, however, the volume of the buffer solution mixed with the sample solution is often substantially greater than the original volume of the buffer solution, therefore necessitating the consideration of “dynamic” buffer capacity in textbook. This paper proposes a “de-formulized” strategy for addressing “dynamic” buffer capacity problem, which is completely based on the underlying logic of the discipline. This approach avoids adding to the memorization burden of students’ learning.
- Static buffer capacity,
- Dynamic buffer capacity,
- Calculation by de-formulized mode,
- GeoGebra software
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