Question

when ferrous sulphate crystals are heated in a test tube what we observe?​

Answer 1

Answer:

green colour of the salt fades and a gas with the smell of burning sulphur is evolved. Ferrous sulphate crystals contain water molecules (FeSO4. 7H2O). Onheating, ferrous sulphate crystalslose its water and anhydrousferrous sulphate (FeSO4) is formed which is of white colour. it will help u

Answer 2

Then crystals lose water and anhydrous ferrous sulphate (FeSO4) is formed. So their colour changes from light green to white. On further heating, anhydrous ferrous sulphate decomposes to form ferric oxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3).