Question

What observations can be made during the reaction between iron sulphate and zinc?

Answer 1

Zinc is more reactive than iron. So when it is added to iron sulphate solution it displaces iron. The reaction involved is:

$Zn\left(s\right)+FeS{O}_4\left(aq\right)🡪ZnS{O}_4\left(aq\right)+Fe\left(s\right)+Heat$

The colour of the solution changes from green to colourless due to the formation of zinc sulphate. The reaction is exothermic in nature.