Unknown solution- ppm of Ca needed

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SUMMARY

The discussion centers on calculating the concentration of calcium (Ca) in an unknown solution using EDTA titration. The user has titrated 25 ml of the unknown solution with 2.3 ml of 0.01 M EDTA, establishing a 1:1 reaction ratio between Ca and EDTA. To find the concentration of Ca in ppm, the user should first calculate the moles of EDTA used, then determine the moles of Ca, and finally convert this value to ppm based on the volume of the unknown solution.

PREREQUISITES
  • Understanding of titration principles and stoichiometry
  • Familiarity with molarity calculations
  • Knowledge of converting moles to ppm
  • Basic chemistry concepts related to calcium and EDTA reactions
NEXT STEPS
  • Learn about stoichiometric calculations in titration
  • Study the process of converting moles to parts per million (ppm)
  • Explore the use of EDTA in complexometric titrations
  • Review titration calculation examples on educational platforms like Titrations.info
USEFUL FOR

Chemistry students, laboratory technicians, and professionals involved in analytical chemistry or water quality testing will benefit from this discussion.

jackscholar
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I have a problem that involves using a few equations. This is the problem: Calcium and EDTA react in a 1:1 ratio. 2.3ml of EDTA .01M has been used to titrate 25ml of the unknown solution. So I've multiplied 2.3 by .01 yielding a result of .00023 M. I'm not sure where to go from here, do I divide 25 by 2.3 and multiply that number by .00023 to find the amount of Ca moles in the unknown solution then convert it to ppm? Or is my presumption incorrect?
 
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