Question

When ferrous sulphate crystals are heated, a change in colour from green

to white and then to brown is observed. Change in colour from green to

white is due to?
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Answer 1

Answer:

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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).