Question

On heating green ferrous sulphate crystals, reddish brown solid is left as residue and a gas having smell of burning sulphur is evolved.​

Answer 1

Answer:

When green coloured crystals of ferrous sulphate (FeSO4) is heated , it decomposes to form Ferric Oxide (Fe2O3) ,sulphur trioxide (SO3) and sulphur dioxide( SO2) . The sulphur dioxide gas gives the odour smell. This Reaction is an example of Thermal Decomposition Reaction.

Explanation:

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Answer 2

Explanation:

On heating green ferrous sulphate crystals, reddish brown solid is left as residue and a gas having smell of burning sulphur is evolved. The reddish brown solid is ferric oxide and the gas evolved is chlorine. Its chemical reaction is :-

Fe3Cl + O2 =========> Fe3O2 + Cl