Question

Are brown fumes released when ferrous sulphate is heated

Answer 1

Answer:

When further heated the anhydrous material releases Sulphur dioxide and sulphur trioxide leaving a reddish brown iron oxide PBO is lead oxide nitrogen dioxide which appears as brown fumes and oxygen is produced

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Answer 2

Answer:

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Solution:-

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No when ferrous sulphate is heated then Sulphur trioxide and sulphur dioxide are formed.In this reaction the ferrous sulphate broke down into ferric oxide with two gases evolved .

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Reaction:-

2Fe2SO4 ------(decomposition)----->Fe2O3 +SO2 +SO3

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however when lead nitrate decomposes brown fumes of nitrogen oxide are produced .In this reaction lead nitrate is decomposed into Lead oxide and nitrogen dioxide and oxygen.

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Reaction:-

2Pb(NO3)2--(decomposition)-->2PbO+4NO2 +O2

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