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 is displaces iron. The reaction involved is :

$\mathrm{Zn}\left(s\right)+{\mathrm{FeSO}}_4\left(\mathrm{aq}\right)\to {\mathrm{ZnSo}}_4\left(\mathrm{aq}\right)+\mathrm{Fe}\left(s\right)+\mathrm{Heat}$

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