Question

Few crystals of ferrous sulphate are heated strongly in a dry boiling tube.
Answer the following.
i) What is the colour of ferrous sulphate crystals?
ii) What would be the changes in colour noticed during and after heating?
Justify.
iii) What would be the odour (smell) of product mixture?
iv) Write the balanced chemical equation for the reaction.

Answer 1

Explanation:

The ferrous sulphate crystals are light green in colour. The gas emitted has the characteristic odour of burning sulphur. On heating, the colour changes from light green to white. On further heating, the white substance changes to dark brown solid.