Question

state the effect onheating copper sulphate crystal in dry test tube​

Answer 1

Answer:

The blue coloured copper sulphate crystals turns white due to the loss of water molecules. ... When copper sulphate is heated, it looses water molecules and hence it looses blue colour.

Answer 2

When the copper sulphate is strongly it changes it colour from blue to white.

These happens due to loss of water i.e water from copper sulphate get evaporated and gives crystalline copper sulphate (CuSO4).

Explanation

Copper sulphate is seen to be blue in colour because of refraction of blue Light due to water molecules but when we heat the solution the water from solution get evaporated due to which light doesn't refract and we get crystalclear copper sulphate.

hope it helps...