Experiment 4 Discussion Qualitative Analysis

Experiment 4 Discussion Qualitative Analysis - (10 pts.) 4....

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Experiment 4: Qualitative Analysis of Cations and Precipitation Reactions Discussion 1. What were the objectives of this experiment? (5 pts.) 2. Why was it necessary to add HCl to the mixture of cations at the beginning of the separation process? Why was it necessary to avoid adding too much HCl during this first step? After the HCl was added to the mixture, the mixture was centrifuged and another drop HCl was added. Why? (10 pts.) 3. How was the lead(II) ion separated from the sample solution mixture? How was the presence of the lead(II) ion tested? Was the lead(II) ion present in your unknown?
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Unformatted text preview: (10 pts.) 4. How was the mercury(I) ion separated from the sample solution mixture? How was the presence of the mercury(I) ion tested? Was the mercury(I) ion in your unknown? (10 pts.) 5. How were the silver ions separated from the sample solution mixture? How was the presence of the silver ions tested? Was the silver ion in your unknown? (10 pts.) 6. Discuss any difficulties you may have had with the experiment and suggest possible ways in which you could improve your experimental outcome. (5 pts.)...
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