University Chemistry ›› 2023, Vol. 38 ›› Issue (2): 277-282.doi: 10.3866/PKU.DXHX202208067

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A General Method for Accurately Calculating the End-Point Errors of Asymmetric Redox Titrations Using Scilab

Tiejun Su()   

  • Received:2022-08-12 Accepted:2022-09-01 Published:2022-09-19
  • Contact: Tiejun Su


The end-point error of an asymmetric redox titration is related to the potential of the end-point and equilibrium concentration of the titration product, both of which are bottlenecks in the calculation of the end-point error. To overcome these problems, we have comprehensively considered the quantitative relationship between material balance, electronic balance, and the Nernst formula. On this basis, a series of equations were constructed, whose unknowns were the equilibrium concentration of titration product and titration volume ratio. The equations were solved using a software called Scilab. By substituting the solution results into the relevant formula, the end-point error could be obtained, which was consistent with the literature value.

Key words: Redox titration, End-point error, Asymmetric electric pair, Numerical calculation