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Citation: Limin Shao, Na Li. A Unified Equation Derived from the Charge Balance Equation for Constructing Acid-Base Titration Curve and Calculating Endpoint Error[J]. University Chemistry, ;2024, 39(11): 365-373. doi: 10.3866/PKU.DXHX202401086 shu

A Unified Equation Derived from the Charge Balance Equation for Constructing Acid-Base Titration Curve and Calculating Endpoint Error

Limin Shao ¹ ,
Na Li ²

1.
School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China;
2.
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

Received Date: 30 January 2024
Revised Date: 12 March 2024

Starting from the Charge Balance Equation (CBE), this paper derives the inverse function V= g([H⁺]) for the titration curve, and directly employs this inverse function to calculate the endpoint error. Based on the characteristics of the CBE formula, the CBE forms of all acid-base systems are unified, and the straightforward correlation between the titration curve and the endpoint error provides learners with a new perspective to understand the connotation of acid-base equilibrium.
- Charge balance equation,
- Inverse function,
- Acid-base equilibrium,
- Acid-base titration curve,
- Titration error
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