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An ionic compound is identified based on the chemical properties that are found within the compound In these experiments the focus was on the cationic and anionic properties of an unknown ionic compound The main purpose of these experiments was to learn the various elimination and confirmation tests of the ions and use those same tests to identify an unknown compound A basic knowledge of compounds and ions would suffice to understand the concepts provided in the paperPotassium Iron III Zinc II Copper II and Cobalt II were the cations tested for this experiment A centrifuge tube was labeled for each cation and then 10 drops of the cations was placed into their own tube before each test For the Metal Hydroxide test 6 M NaOH was added into each tube until a precipitate was formed or a max of 20 drops For the cations that did form a precipitate an extra 10 drops of NaOH was added to check for amphoteric species For the Ammonium Hydroxide test 15 M NH4OH was added until a precipitate formed or a maxi of 20 drops For the cations that had precipitate form an extra 10 drops was added to check for any changes After both the elimination tests the cations was confirmed through the flame test For the flame test twenty drops of each cation was placed into the labeled tube A Bunsen burner was used for the source of the flame A Nichrome ring was for the experiment and cleaned by dipping it in HCl and burning it through the cone of the blue flame until no color was observed The ring was then placed into one tube containing the cation and placed at the cone of the blue flame for observation The color for each cation flame was observed by the naked eye and through a piece of cobalt Chloride Sulfate Nitrate and Carbonate were the anions used for this part of the experiment
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