Question

What would a student report nearly after 30 minutes of placing duly cleaned strips of Al,Cu,Fe & Zn in freshly prepared iron sulphate solution taken in four beakers ?

Answer 1

Answer:

Aluminium sulphate will be formed

Zinc sulphate will be formed

Explanation:

To start off we must first know the positions of the metals in the reactivity series

Aluminium and zinc are above iron in the reactivity series

Copper is below iron in the reactivity series

When the respective metals are placed in iron sulphate solution the following is observed:

Since aluminium and zinc are above iron in the reactivity series they will displace iron from its sulphate to form respective metal sulphates and iron as a metal that is

Aluminium sulphate and zinc sulphate

However when copper and iron are placed in the solution no observable change is observed because they cannot displace iron from its sulphate.