Question

1.What is the colour of Ferrous sulphate crystals? How does this colour change upon heating?Give balanced chemical equation for the following.

This is of class 10 NCERT
Plz tell

Answer 1

Answer:

the colour of ferrous sulphate crystals is green.

ferrous sulphate crystals contain water molecules  [Feso4.7H2oO] . on heating ferrous sulphate crystals lose water and anhydrous ferrous sulphate [FeSO4] is formed. So, their color 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] . So , the gas emitted smels like burning sulphur .

in this reaction , the single reactant FeSO4 decomposes to form three different products . so, the reaction is decomposition reaction.

2FeSO4{S]    ⇒    Fe2O3{S}  +  SO2{g}  +  SO3{g]

anhydrous               ferric oxide [ brown ]

ferrous                    

sulphate

[ white ]

Explanation: