Question

Copper sulphate is a fungicide usally applied on to rubber plants in agriculture. A farmer made copper sulphate solution in an iron bucket and kept it over night. Does he do a proper job? Why?

Answer 1

Since iron is more reactive than copper, so copper sulphate cannot be stored in iron bucket as following reaction will take place-
Fe + CuSO₄ $\to$ FeSO₄ + Cu
So the farmer is not doing the proper job. As we can see displacement reaction is taking place.