Comparing the solubility's of copper sulphate, sodium chloride and potassium nitrate
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... inary tests that showed that more of the salts dissolved as we increased the temperature. Obviously these tests could be accurate, as I did not have time to plan them carefully. However, they do show that as the temperature was increased, the solubility also increased. Having looked at the information given by the data booklet and my own preliminary work, I think that as the temperature increases the solubility of all the salts will increase.
Equipment 3 boiling tubes, a burette, a thermometer, ceramic mat, Bunsen burner
Method Weigh out about 10g of copper sulphate and record its mass. Place this in a boiling tube and add 15cm³ of distilled water with the burette. The burette is better for measuring small amounts of water than a measuring jug because it is more accurate. Now heat the boiling tube gently until all the crystals have gone into solution (should be around 70ºC). Allow the solution to ...
