State the colour of ferrous sulphate crystals before and after heating
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Explanation:
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On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate (FeSO4) is formed. So their colour changes from light green to white. On further heating, anhydrous ferrous sulphate decomposes to form ferric oxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3).
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Answer:
Green before heating and brown after heating due to formation of Fe203.
SO2, SO3
FeSO4=Fe2O3+So2+So3
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