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EDTA Titration of Ca2+ and Mg2+ in Bottled Water

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documents in English
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course material
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4 pages
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Advanced
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  1. EDTA titration of Ca2+ and Mg2+ in bottled water
  2. Objective
  3. Procedure
  4. Apparatus
  5. Data and sample calculations
  6. Results and discussion
  7. Titration with EDTA using Hydroxynaphthol indicator

The objective of this experiment is to determine the total concentration of metal ions required to completely react with EDTA, or ethylene diamine tetra-acetate. The concentration determined will then be taken as the equivalent concentration of Ca2+ and Mg2+. Ca2+ will be analyzed separately in an additional titration after Mg(OH)2 has been precipitated from the solution using a strong base.

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