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Question
On heating green coloured ferrous sulphate crystals, a reddish brown solid is left out and the smell of a gas having the odour of burning sulphur is obtained. Identify the type of reaction involved.
On heating green coloured ferrous sulphate crystals, a reddish brown solid is left out and the smell of a gas having the odour of burning sulphur is obtained. Identify the type of reaction involved.
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Solution
The correct option is B Thermal Decomposition
2FeSO4→Fe2O3+SO2+SO3
This is a thermal decomposition reaction.
On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate is formed. Hence the colour changes.
On further heating anhydrous ferrous sulphate decomposes to form ferric oxide, sulphur dioxide and sulphur trioxide.SO2 gives the smell of burning sulphur.
2FeSO4→Fe2O3+SO2+SO3
This is a thermal decomposition reaction.
On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate is formed. Hence the colour changes.
On further heating anhydrous ferrous sulphate decomposes to form ferric oxide, sulphur dioxide and sulphur trioxide.SO2 gives the smell of burning sulphur.
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