Crystals of copper sulphate contain water of crystallization
Materials Required
The Procedure
Real Lab Procedure
Take some crystals of copper sulphate (CuSO4.5H2O) in a spatula.
Heat these crystals on a burner by keeping the spatula directly over the flame of the burner.
The change in colour of the copper sulphate crystals changes to white during the heating.
Stop heating when it becomes completely white.
Transfer the content to a watch glass.
Keep the watch glass in an open atmosphere for some time and allow it to cool and the white colour of the anhydrous copper sulphate is changed to blue.
Simulator Procedure
Using spatula take some amount of copper sulphate crystals.
Turn on the burner.
Bring the spatula containing copper sulphate (CuSO4.5H2O) towards the Bunsen burner and heat the crystals.
Transfer the content to a watch glass.
Observations
On heating, the blue colour of copper sulphate crystals first changes into ___________ and then to _________.
On cooling, the colour of copper sulphate again turns _________ .
Precautions
Carefully hold the spatula with copper sulphate crystals.
Avoid bringing your face too close to the hot spatula, as it may cause injury.