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present in the precipitate and the filtrate. This was confirmed due to the color change of precipitate to black and from the filtrate obtained during that step; we added NH3and sawa white precipitate appear, confirming silver. Since there was such a large room for error, weather our results are accurate or not should not be factored into the final grade of the lab report. This is because we try to maintain the maximum amount of accuracy while performing the experiments. However, the nature of an experiment is to record observations using a qualitative way of reasoning. This basis varies significantly from thepoint of view of each person.
Post Lab Questions1.What are the properties of the Group I, II and III cations that permit their separation by groups?2.(1) What is the electron configuration of Hg+ion?(2) Why does it actually exists as Hg22+ion rather that as Hg+ ion?(3) When Hg22+ ion disproportionate, why does it become Hg(s) and Hg2+ion rather than form species with some other oxidation numbers?3.FeS(s) dissolves by the addition of HNO3 in a manner similar to that of CuS(s). In the process, the Fe2+ion is oxidized to Fe3+ion. Write an equation for this reaction.