3.2 gm of ferrous sulphate crystals are heated in dry boiling tube list any two observations , name the type of chemical reaction taking place , write the chemical equation for the reaction
Answers
Answer:
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Explanation:
When Ferrous Sulphate crystals (green vitrol) are heated, the seven water molecules of crystallization attached to one formula unit mass of ferrous sulphate get removed. The chemical reaction representing the above chemical change is as below:
FeSO₄ . 7H₂O ------heat-------> FeSO₄ + 7H₂O
On further heating, FeSO₄ decomposes to form ferric oxide, and evolve SO₂ and SO₃ gases. The chemical reaction representing the above chemical change is as below:
FeSO₄ -----heat------> Fe₂O₃ + SO₂ + SO₃
Observations:
Tiny water droplets are seen on the inner surface of the test-tube.
The color changes from green to white and then to brown.
Suffocating gases SO₂ and SO₃ are released.
Type of Chemical Reaction: Decomposition Reaction
- In a decomposition reaction, a single reactant breaks down into various products under favorable conditions like heat, electricity or light.
Answer:
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Explanation:
Following two observations are observed when crystals of ferrous sulphate are heated: (1) Change in state and color takes place. (2) A gas is evolved during this process. Since, the compound (ferrous sulphate) decomposes into two or more substances therefore, it is a decomposition reaction
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