EDTA complex formation - Kimberly Hargraves Chemistry 210...

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Kimberly Hargraves Chemistry 210 Complex Formation Titrations with EDTA lab 3-4-11 1
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Complex Formation titrations with EDTA Abstract: Complex Formation reactions are used when forming bonds between metals and anions in a water solution. EDTA was the anion chosen in this lab because of its unique structure to bend and its 1:1 ratio it will form in a reaction when added to a metal. EDTA was titrated in unknown water samples. By calculating the concentration of EDTA allowed me to calculate a 34 M of CaCO 3 in the water samples collected. This concentration was used to determine the hardness of water. Introduction: The purpose of this lab was to determine the hardness of a sample of water from my lab partner, Ebony Walker’s Brita filter water from her kitchen sink. The water was titrated with the EDTA solution. EDTA was chosen in this lab because its ratio will be 1:1 when reacting with other metals. This is because its structural formula consists of single bonds that allow it to bend, rotate and change direction. Complex Formation is when an anion precipitates a metal that leads to a higher concentration of the anion. When this occurs the anion and metal will form bonds between each other and the solid anion metal redissolves. 1
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This note was uploaded on 04/18/2011 for the course CHEMISTRY 210 taught by Professor Dr.han during the Spring '11 term at Fayetteville State University.

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EDTA complex formation - Kimberly Hargraves Chemistry 210...

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