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EDTA Titration of Water

EDTA Titration of Water. Michael Marroquin and Meg Dailey. Importance of Drinking Water. Regulation of body temperature Gives cells their shape Major component of bodily fluids Keeps skin healthy Cannot store water in our bodies. Hardness of Water. May help towards dietary needs

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EDTA Titration of Water

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  1. EDTA Titration of Water Michael Marroquin and Meg Dailey

  2. Importance of Drinking Water • Regulation of body temperature • Gives cells their shape • Major component of bodily fluids • Keeps skin healthy • Cannot store water in our bodies

  3. Hardness of Water • May help towards dietary needs • Weak inverse relation between water hardness and cardiovascular disease

  4. Purpose • Determine the hardness of water in samples taken from campus apartments and dorms • Determine which building has the hardest water • Determine which building has the softest water • Determine if bottled water is more soft than samples

  5. Procedure: Standardization of EDTA • Prepare EDTA solution by placing 1.8613 grams of EDTA and 8 mL of buffer in a 500 mL flask and diluting to the mark • Prepare a calcium chloride solution by placing 0.5005 grams of CaCO3 and 100 mL of 0.1 M HCl in a beaker and mixing completely • Place 3 mL of calcium chloride solution, 3 mL buffer, and 4 drops of calmagite indicator and titrate with EDTA • Determine molarity of EDTA

  6. Data: Standardization of EDTA

  7. Procedure: Titration of Water • Obtain water samples from dorms and apartments on campus • Place 25 mL of water, 3 mL of buffer, and 4 drops of calgamite indicator in a 250 mL Erlenmeyer flask • Titrate water with EDTA • Repeat until three good trials are obtained • Repeat for each dorm and apartment

  8. The Water Bottles

  9. Data: Titration of Water

  10. Summary of Data

  11. Example of Calculations Hardness of Water Using Tyler Run Apartments Trial 1: Average of Hardness of Water Using Tyler Run Apartments: Standard Deviation of Hardness of Water Using Tyler Run Apartments:

  12. Conclusion • Dasani clearly had the softest water • Manor West had the hardest water • Drink bottled water • Had some bad trials, however, overall experiment was successful

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