CBSE - X - Chemistry
Q. If Ferrous sulphate crystals or FeSO4.7H2O are heated they give Ferrous Sulphate .Ferrous Sulphate Crystals are of green colour but on heating what is colour of Ferrous Sulphate [I am confused as in some books it is given dirty white and in some green]
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And thanks expert for answering my previous question.
- Ferrous sulphate crystals contain water molecules as water of crystalisation - (FeSO4. 7H2O).
- 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). So, the gas emitted smells like burning sulphur.
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