Question

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➡what happens when ferrous sulphate is heated....?​

Answer 1

Answer- The above question is from the chapter 'Chemical Equations and Reactions'.

Given question: What happens when ferrous sulphate is heated?

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Answer: When hydrated ferrous sulphate ((FeSO₄.7H₂O) which is green in colour is heated, it loses water of crystallization to form an-hydrated ferrous sulphate (FeSO₄).

                         Δ

1) FeSO₄.7H₂O ------> FeSO₄ + 7H₂O

On heating white an-hydrated ferrous sulphate, we get, a reddish brown solid called ferric oxide, sulphur dioxide (which gives smell of burning sulphur) and sulphur trioxide.

                    Δ

2) 2FeSO₄ -------> Fe₂O₃ + SO₂ + SO₃

Answer 2

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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).......