Anion Test- Testing for negative ions in solutions.. Applied science unit 3 (AQA)

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Anion Test- Testing for negative ions in solutions.


  • Pipette
  • Test tube
  • Test  tube rack
  • Goggles
  • Chemicals: Chloride, Sulphate, Carbonate, Dilute nitric acid, Silver nitrate solution, Hydrochloric acid, Barium chloride solution


I will test unknown solutions to find out if they are a Sulphate, Carbonate and Chloride. I would check for the negative ions in order to check for substance present.


To start, first of all I would design a results table to record my results in during the experiment, then I would put on my goggles this is to ensure my safety whilst handling hazardous/dangerous substances such as Chlorides. Then I would collect the correct equipment needed for this experiment this includes collecting test tubes, chemicals etc. When I have collected my equipment then I would set it all up such as putting my test tubes in the test tube holder, I would use a pipette to get the chemicals and put them in the test tube for testing. Then I would start the experiment and doing the tests, for example if I was to test for a Chloride I would first add a few drops of dilute Nitric acid then add a few drops Silver nitrate solution. The results that I get I would then record them in my results table.

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Risk Assessment:



Using my hypothesis I was able to identify substances. I was able to find out if they were a Carbonate, Sulphate or a Chloride. My results support my Hypothesis because it was correct.


To make my experiment more accurate I would first make sure that I do precise measurements instead of just adding in solutions. Secondly to get more reliable results I would repeat my experiment to make sure that I got the correct results.


The first limitation of the anion test is that you need to use a large amount ...

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