Q22 of 45 Page 2

What is the colour of FeSO4.7H2O crystals? How does this colour change upon heating? Give balanced chemical equation for the changes.

The colour of FeSO4.7H2O crystals is light green. Upon heating the crystals of FeSO4.7H2O losses water of crystallization and becomes white in colour,

Balanced chemical equation for the change is: -


2FeSO4 Fe2O3 + SO2 + SO3

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