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Citation: Shao Limin. On the Universal Calculation of Various Types of Titration Error[J]. Chemistry, ;2017, 80(3): 307-311. shu

On the Universal Calculation of Various Types of Titration Error

Shao Limin

Department of Chemistry, University of Science and Technology of China, Hefei 230026

Received Date: 1 August 2016
Accepted Date: 9 October 2016

Titration error is a key concept in the course of analytical chemistry. In traditional textbooks, titration error is defined with concentrations of both titrant and analyte. The definition via concentration is not suitable for calculation, so a number of formulae are derived from it and used practically. The formula-oriented strategy is simple, but fails to provide a universal way to calculate various types of titration error, which in turn burdens students with annoying memorization. Another flaw of the strategy is its incapability in complex problems, because the formula is either unavailable or too complicated. In this paper, the definition via volume was proposed to replace the one via concentration. The volumes in the definition are those of the titrant added at the end point and the stoichiometric point, respectively. The definition via volume was proven to be equivalent to the one via concentration, and has notable advantages over the latter, such as free from derived formulae and universal. It was also discussed that the Ringbom formula cannot be applied to complicated titrations, so it is not a universal approach to the calculation of titration error as some researches claimed.
- Quantitative Chemical Analysis,
- Titration,
- Titration Error
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