Question

What happens when copper sulphate solution is heated??

Answer 1

Hey there,

The water in the copper sulfate solution evaporates and the crystals of copper sulfate turns from blue to white, meaning that it turns into anhydrous copper sulfate. On re hydrating, you get back the blue color.

Hope it may help..

Answer 2

Heating the CuSO4.5H2O crystals causes then to loose the water of crystallisation that is the 5H2O part. It becomes anhydrous copper sulphate. Its colour changes to white from blue.

CuSO4.5H2O →CuSO4 +5H20

Further heating the anhydrous copper sulphate may cause it to undergo decomposition and form a black substance which is copper(II) oxide along with it oxygen and sulphur dioxide gases are also formed.

2CuSO4→2CuO + O2 +2SO2