Quantitative Analysis of Sulfate in Water by Indirect EDTA Titration.

• Autores: Deirdre Belle Oudry
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 85, Nº 9, 2008, págs. 1269-1270
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The determination of sulfate concentration in water by indirect EDTA titration is an instructive experiment that is easily implemented in an analytical chemistry laboratory course. A water sample is treated with excess barium chloride to precipitate sulfate ions as BaSO4(s). The unprecipitated barium ions are then titrated with EDTA. Students are exposed to a number of important concepts including chelation, indirect and back titrations, precipitation, and water quality. A variety of adaptations can be made to the procedure to fit the needs of different lab courses, including general chemistry and environmental chemistry.