Investigating for Cations and Anions :: Papers

Investigating for Cations and Anions In this experiment I will investigate what cations and anions are present in various compounds. This will embarrass carrying out a qualitative analysis, because I need to find out what type of cations and anions are there and not quantitative analysis, which includes finding out how some(prenominal) of each element there is. Safety Points Wear glasses Wear gloves Do not mix more than two solutions Only mix the solutions listed by the teacher Handle the chemicals with extreme care Put the chemical solutions into a test-tube which is resting on a test-tube holder Follow school lab safety procedures. Materials dissimilar chemicals. Test tubes. Boiling tubes. Pipettes. Test tube holder. Bench mat. Method I first copied the chemical solutions listed. I put on some gloves and safety glasses. I got a test-tube holder and placed five test-tubes in it. Cations I added the test solut ions Copper Chloride to the test-tube. To this I added a a few(prenominal) drops of sodium Hydroxide solution. After the few drops a pale blue precipitate of Copper Hydroxide appeared that indicated the presence of Cu ions. I then added the test solution Iron Chloride to the second test-tube. To this I added a few drops of Sodium Hydroxide. After that a brown precipitate of Iron Hydroxide appeared that indicated the presence of Fe ions. To the 3rd test-tube, I added the solution Sodium Hydrogen Carbonate and added Dilute Sodium Hydroxide. I quickly covered the test-tube with a delivery tube and put the end of it into another test-tube with limewater. The limewater turned a cloudy/milky colour which indicated that there was CO present. Anions In the 4th test-tube, I poured the solution Copper Chloride into the test-tube.