Question

Write two observation when feso4 is heated strongly in a hard glass test tube

Answer 1

observation

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.

2feSo4(s)----->fe2O3(s)+SO2(g)+SO3(g)

Answer 2

1. gas is liberated.
2 . test tube becomes hot on heating.
3. the solution of colour changes