Question

what do you observe when iron(ll) sulphate is heated strongly in a test tube ?​

Answer 1

When the blue crystal of hydrated copper sulphate are heated in a test tube ,they turn into white powder which turns black into a blue solid when a few drops of were added

Answer 2

Answer:2 FeSO4 → Fe2O3 + SO2 + SO3.

Explanation:

On heating, ferrous sulphate 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).