why green colour of ferrous sulphate crystals changes when heated? Illustrate with the help of a chemical equation
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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).
Explanation:
equation- 2Fe SO4 (s) + Fe2O3(s) + SO2 + (g) + SO3 (g)
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