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Test different salts taken to show that each has a different solubility in water. Take 5 g
samples and try to dissolve each in 15 mL of water in a test-tube. Attach the stopper then
shake each test-tube vigorously for the same time to show that solubility is a characteristic
of a particular substance, e.g. sugar, common salt, potassium nitrate, calcium sulphate. The
solubility of a salt is usually expressed as the number of grams able to dissolve in 100 g
water at 20oC, e.g. ammonium chloride 37.2 g, barium chloride 35.7 g, calcium chloride 42.7
g, copper sulphate 20.7 g, lead nitrate 54.4 g, magnesium sulphate 25.2 g, potassium chloride
34.0 g, potassium iodide 144.0 g, sodium bicarbonate 9.6 g, sodium chloride 36.0 g, sodium
hydroxide 109.0 g, sodium nitrate 87.5 g.
sharon kalunda answered the question on April 12, 2019 at 06:51
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