Radioisotopes in Industry Essay

2236 WordsMar 6, 20139 Pages
Experiment using Bunsen flame to determine Ionic compounds Aim The aim of this experiment is to test known samples of ionic compounds to determine ions present in three unknown samples using the results of the known ionic substances, and comparing the colored flames and form before crushing, the identities of the unknown substances can be revealed. Apparatus used • Bunsen burner • Heat proof mat • Mortar and pestle • Flame test loop • Beaker- labeled for hydrochloric acid Lab coats were worn to protect clothing. Protective eye wear was also worn to protect the eyes from any sparks that may occur from the Bunsen flame. Method 1. A flame test wire was cleaned by dipping in concentrated hydrochloric acid and held in Bunsen flame. This was repeated until the wire had no color in the flame. 2. A small amount of the known samples were crushed into a mush using hydrochloric acid in a mortar and pestle. 3. Using the clean flame test wire, a small sample of mush was placed into the Bunsen flame and the color of the flame recorded. 4. The flame test wire was cleaned as in step 1. 5. Steps 1 to 3 were repeated for all known samples. 6. Steps 1 to 3 were then repeated for the unknown samples. 7. Using the results from the known sample the ions in the unknown samples were determined. Results |Compound |Appearance before crushing |Flame colour | |Copper Sulphate (CuSo4) |Blue medium sized crystals |Blue/Bright Green | |Barium Carbonate (BaCO3) |Fine white crystals |Light Green | |Calcium Chloride (CaCl2) |Fine white crystals |Brick Red | |Potassium Iodide (KI) |Large white crystals |Orange then Lilac | |Sodium
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