Question
Download Solution PDFWhat products are formed when ferrous sulfate crystals are heated in a test tube?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Ferric oxide + water + sulfur dioxide + sulfur trioxide.
- 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).
Additional Information
- Ferrous sulphate crystals contain water molecules (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.
- In this reaction, the single reactant FeSO4 decomposes to form three different products.
- So, the reaction is a decomposition reaction.
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