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Answer 1

Here Is Your Ans

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# Colour of FeSO4 is green

# It's colour changes to brown due to the formation of Fe2O3 ( ferric oxide) after decomposition

# 2FeSO4--- Fe2O3 + SO2 + SO3

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Answer 2

Hello Friend.

Here is your answer below,,

The colour of Fe2SO4.7H2O is Blue - Green in colour.

When further heated any hydrous material releases sulphur dioxide and white fumes of sulphur trioxide , leaving a raddish-brown iron oxide

Fe2SO4.7H2O ----------heated-------- Fe2O3+SO2+SO3

I hope that helps you