Question

How to separate crystals of copper sulphate

Answer 1

Answer:

Evaporation is used to separate a soluble solid from a liquid. For example, copper sulfate is soluble in water – its crystals dissolve in water to form copper sulfate solution. During evaporation, the water evaporates away leaving solid copper sulfate crystals behind.

Answer 2

➢ Take some impure copper sulphate in a china dish and dissolve in minimum amount of water.

➢ Filter the solution to remove impurities.

➢ Heat the copper sulphate solution on water bath.

➢ When small crystals form on glass rods, stop heating.

➢ Allow the saturated solution to cool slowly.

➢ Crystals of pure copper sulphate are formed.

➢ Separate the copper sulphate crystals by filtration and dry.