Question

Heat a few crystals of copper sulphate in a dry boiling tube. What is the colour of the copper sulphate after heating? Do you notice water droplets in the boiling tube? Where have these come from? Add 2-3 drops of water on the sample of copper sulphate obtained after heating. What do you observe? Is the blue colour of copper sulphate restored?
$\:$​

Answer 1

Answer:

During this process of heating, it has been observed that before heating crystals of copper sulphate are blue in colour. But after heating, the colour changes from blue to white.

Answer 2

Answer:

1. The colour changes from bule to white of the copper sulphate after heating .
2. Yes, water droplets will be seen inside the boiling tube.
3. These water droplets come from the water molecules of crystallization.
4. If we add 2-3 drops of water on the sample of copper sulphate obtained after heating the blue colour of copper sulphate will be restored .

Explanation:

Hope my answer will help you Siso..