Question

Take about 2g ferrous sulphate crystals in a dry boiling tube. The colour of the ferrous sulphate is green. Heat the boiling tube over the flame of a burner or spirit lamp. Now observe the colour of the crystals after heating. What happened? and why does this happen? give a brief discription of this activity.

Answer 1

Answer:

2 g of ferrous sulphate crystals are heated in a boiling tube then  we observe that :

1 Ferrous sulphate crystals contains 2 water moelcules.

On heating it looses water molecules and becomes anhydrous ferrous sulphate .

2. Colour changes from  light green to white . Ferrous sulphate crystals  which are in green colour decomposes  to give Ferric oxide , sulphur dioxide and sulphur trioxide gas.

3. On further heating  FeSO4 anhydrous changes to dark brown solid ..

4. The gas emitted has the characteristics smell of sulphur.

Chemical reaction :.

2FeSO4 (S) -------------->Fe2O3 (S) +SO2(g) +SO3 (g)

Anhydrous                  Ferric oxide

Ferrous sulphate

PLEASE MARK ME AS BRAINLIEST

PLEASE PLEASE

Answer 2

Answer:

Here's your Answer

Explanation:

What happens to the colour of ferrous sulphate crysals after heating?

Ans:- The colour of the crystals after heating is green. We can also smell the characteristic odour

of burning sulphur.

What happened?

Ans:- Ferrous sulphate burnt on a spirit lamp to produce Ferric Trioxide

The Equation:-

2FeSo4 = FeO3+SO2+SO3

FeO3 is Ferric Trioxide

SO2 is Sulphur oxide

SO3 is Sulphur Trioxide

Hope you Understand Please mark me as Brainliest