Analysis of Tap Water for Metallic Cations

In summary, the conversation discusses the presence of an unknown cation in tap water, which forms a complex with EDTA at pH 10 but not at pH 12. The formation constant for this complex is 1×10^13. The EBT and Calcon indicators are not affected by this cation. The conversation then questions the potential impact of this cation on the determination of Ca2+ and Mg2+ concentrations in an experiment.
  • #1
adenine135
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Assume that the tap water to be analyzed contains a certain amount of an unknown cation which forms a complex with EDTA at pH 10 but not at pH 12. The formation constant for the EDTA complex of this unknown cation at pH 10 is 1×10^13. Neither the EBT nor Calcon indicators are affected by the presence of this cation. How would the values of the concentration of Ca2+ ions and the concentration of Mg2+ ions determined in this experiment be affected by the presence of this unknown cation impurity?



I have absolutely no idea where to even start with this one :(
 
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  • #2
What experiment? What pH? Details!
 

Related to Analysis of Tap Water for Metallic Cations

1. What is the purpose of analyzing tap water for metallic cations?

The purpose of analyzing tap water for metallic cations is to determine the presence and concentration of various metal ions in the water. This information is important for monitoring the quality of drinking water and identifying any potential health risks.

2. Which metallic cations are typically included in the analysis of tap water?

The most common metallic cations analyzed in tap water include calcium, magnesium, iron, copper, zinc, and lead. However, other cations may also be of interest depending on the specific location and water source.

3. How is tap water tested for metallic cations?

Tap water is typically tested for metallic cations using a technique called atomic absorption spectroscopy. This involves passing a beam of light through the water sample and measuring the amount of light absorbed by the metal ions present.

4. What are the potential health implications of high levels of metallic cations in tap water?

High levels of certain metallic cations in tap water can have negative health effects, such as increased risk of cardiovascular disease and damage to the nervous system. It is important to regularly test and monitor tap water to ensure that it meets the safety standards set by regulatory agencies.

5. How can the results of tap water analysis for metallic cations be used to improve water quality?

The results of tap water analysis for metallic cations can be used to identify potential sources of contamination and implement measures to improve water quality. This may include adjusting water treatment processes, replacing old pipes, or implementing stricter regulations on industrial and agricultural practices that may contribute to high levels of metallic cations in water sources.

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