- Title
- The investigation of equilibria in solution
- Creator
- Maeder, M.; Abdollahi, H.
- Relation
- Journal of the Iranian Chemical Society Vol. 5, Issue 4, p. 522-534
- Relation
- http://www.ics-ir.org/jics/archive/v5/4/tutorial/1/index.html
- Publisher
- Iranian Chemical Society
- Resource Type
- journal article
- Date
- 2008
- Description
- This contribution describes the practical and computational aspects relevant for the quantitative analysis of chemical equilibria. First a systematic nomenclature based on stability constants is introduced. Next, practical aspects of potentiometric pH titrations and spectrophotometric titrations are discussed. The description of the computational aspects includes the Newton-Raphson algorithm that allows the computation of all species concentrations for a given model, set of formation constants and total component concentrations. The second computational part introduces the Newton-Gauss algorithm for non-linear data fitting. Three practical examples illustrate all the above. They include the spectrophotometric investigations of the interaction of Bi(III) with Cl⁻, of Cu(II) with EDTA and the potentiometric investigation of the Zn(II) ethylenediamine system. All Matlab softwares for the data generation and analysis are available from the authors.
- Subject
- chemical equilibrium; titration; non-linear least-squares fitting; protonation equilibria; complexation equilibria
- Identifier
- uon:5659
- Identifier
- http://hdl.handle.net/1959.13/43573
- Identifier
- ISSN:1735-207X
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