| Determination of the solubility product of Ba(IO(3))(2) by flow injection with amperometric detection. | |
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MedLine Citation:
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PMID: 18967138 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The solubility of Ba(IO(3))(2) has been determined in solutions containing a supporting electrolyte (KCl) to maintain the ionic strength in the 0-0.5 M range. The approach envisaged was based in the amperometric determination of iodine (or triiodide) generated in the reaction involving iodate in equilibrium in the saturated solutions and iodide contained in the solution carrier using a flow injection procedure, the electrode potential being maintained at +0.2 V in a wall-jet cell. The effect of the supporting electrolyte on the solubility of barium iodate was demonstrated and a good approximation of the value for the thermodynamic solubility constant of the precipitate was found by an appropriate correction of the solubility data using mean activity coefficients of barium iodate. The mean activity coefficients were estimated at each ionic strength by using the Debye-Hückel equation and the corrected solubility constant determined at 27 degrees C was found to be 2.7x10(-9) mol(3) l(-3). |
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Authors:
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B Mendes Martins; M Bertotti |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Talanta Volume: 46 ISSN: 0039-9140 ISO Abbreviation: Talanta Publication Date: 1998 May |
Date Detail:
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Created Date: 2008-10-30 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2984816R Medline TA: Talanta Country: England |
Other Details:
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Languages: eng Pagination: 149-54 Citation Subset: - |
Affiliation:
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Instituto de Quimica, Universidade de São Paulo, São Paulo, 05508-900, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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