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On heating the crystals of ferrous sulphate strongly two gases X and Y are evolved. The nature of X and Y is

A) Acidic. B) Basic. C) Neutral. D) Amphoteric


2FeSO₄ ---Heat------> Fe₂O₃  + SO₂  +  SO₃

The gas X will SO₂ ( Sulphur dioxide)  and Y will be SO₃  ( Sulphur trioxide ) 

The nature of these gases ( X and Y ) is acidic . 

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X and Y are  sulfur dioxide and sulphur trioxide.  They are slightly acidic as dissolving them in water, we get a little of sulphuric or sulphurous acid.

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