Question

Arrange the following metals in the order in which they displace each other from the solution of their salts.
Al, Cu, Fe, Mg and Zn

Answer 1

When comparing the reducing power of different metals, it's important to note that a metal with stronger reducing power can replace a metal with weaker reducing power in a solution containing its salt. In this context, the metals can be arranged in increasing order of reducing power:
Cu < Fe < Zn < Al < Mg.

Consequently, we can conclude that magnesium (Mg) has the ability to displace aluminum (Al) from a solution of its salt. However, aluminum (Al) lacks the capability to displace magnesium (Mg) in a similar manner.

So, the sequence in which these metals can replace each other in the solutions of their respective salts is as follows:
Mg > Al > Zn > Fe > Cu