Question

Why the colour of ferrous sulphate crystals change on heating?

Answer 1

Answer:

On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate ... Due to this, it's colour changes from light green to white.

Explanation:

When ferrous sulphate is heated strongly, the following reaction takes place

2FeSO4.7H2O → Fe2O3 + SO2 + SO3.

While SO2 and SO3 evolve out as gases, the residue left is the solid - Fe2O3 (ferric oxide) -

Answer 2

Answer:

the colour gets changes because on heating it loses water and anhydrous ferrous sulphate.. so it changes from light green to white...