Synthesis and Characterization of Potassium Tris(oxalato)ferrate(III) Trihydrate:: A Spectrophotometric Method of Iron Analysis
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[1] Wabash College
Wabash College
Township of Union, Estados Unidos
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- Localización: Journal of chemical education, ISSN 0021-9584, Vol. 72, Nº 10 (October), 1995, págs. 936-936
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
A previous Journal article [J. Chem. Educ. 1984, 61, 1098--1099] described a potassium tris(oxalato)ferrate(III) trihydrate empirical formula experiment that offered an excellent integrative experience in synthesis and characterization for general chemistry laboratory students. However, we have introduced a fast and accurate spectrophotometric method for the determination of iron in the product that takes the place of the photochemical-gravimetric procedure described in the article. Besides the pedagogic interest of bringing three different types of chemical analysis (titrimetric, gravimetric, and spectrophotometric) to bear on one compound, the new iron determination allows students to complete the experiment in 2, 3-hr laboratory periods rather than the 5 periods allotted in the original experiment.
