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Citation: Cunling Ye, Xitong Zhao, Hongfang Wang, Zhike Wang. A Formula for the Calculation of Complex Concentrations Arising from Side Reactions and Its Applications[J]. University Chemistry, ;2024, 39(4): 382-386. doi: 10.3866/PKU.DXHX202310043 shu

A Formula for the Calculation of Complex Concentrations Arising from Side Reactions and Its Applications

1.
College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan Province, China;
2.
Institute of Environment, Henan Normal University, Xinxiang 453007, Henan Province, China

Corresponding author: Cunling Ye, ycl@htu.edu.cn
Received Date: 10 October 2023
Revised Date: 22 November 2023

In complexometric titration, ethylenediaminetetraacetic acid (EDTA), commonly referred to as Y, is the titrant of choice. This system often encompasses various side reactions. This paper derives a formula at the stoichiometric point, based on the side reaction coefficient (α), for calculating the concentration of NY or ML coordination compounds with a coordination ratio of 1 : 1, where NY represents the complex of ligand Y with coexisting metal ions (Nⁿ⁺), and ML denotes the complex of the target metal ions (Mⁿ⁺) with other ligands (L). The formulation significantly streamlines the computation of these complex concentrations.
- Complexometric titration,
- Side reaction coefficient,
- General formula
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