Question

While performing an experiment ,a student observes that when he heats some green crystals in a boiling
tube, the color of the crystals changes to brown and gas evolves which smells like burning sulphur. Interpret
the observations and results.

Answer 1

The burnt crystals are of FeSO4. So when we burn it it dissociates into Iron oxide, sulphur dioxide and sulphur trioxide which gives burning smell of sulphur

Answer 2

The burnt crystals are of FeSO4.

So when we hest it it dissociates into Iron oxide, sulphur dioxide and sulphur trioxide which gives burning smell of sulphur get the attached reaction