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Dear Student,
Ferrous sulphate is basically a hydrated salt. The most commonly available form of hydrated ferrous sulphate contains seven molecules of water of crystallization and therefore it is represented by the chemical formula FeSO4.7H2O.
(a) Ferrous sulphate is blue-green in color, on heating it loses the seven molecules of water of crystallisation and forms anhydrous ferrous sulphate, which is greenish white in colour.
(b) When anhydrous ferrous sulphate is further heated, it decomposes to give sulphur dioxide, sulphur trioxide, which have a rotten and pungent smell and ferric oxide (Fe2O3), which is reddish brown in colour.
This is an example of decomposition reaction.
Following is the equation for the reaction
2FeSO4(s) ————> Fe2O3(s) + SO2(g) + SO3(g)
Regards
Ferrous sulphate is basically a hydrated salt. The most commonly available form of hydrated ferrous sulphate contains seven molecules of water of crystallization and therefore it is represented by the chemical formula FeSO4.7H2O.
(a) Ferrous sulphate is blue-green in color, on heating it loses the seven molecules of water of crystallisation and forms anhydrous ferrous sulphate, which is greenish white in colour.
(b) When anhydrous ferrous sulphate is further heated, it decomposes to give sulphur dioxide, sulphur trioxide, which have a rotten and pungent smell and ferric oxide (Fe2O3), which is reddish brown in colour.
This is an example of decomposition reaction.
Following is the equation for the reaction
2FeSO4(s) ————> Fe2O3(s) + SO2(g) + SO3(g)
Regards