question_answer 1)

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

Answer:

More negative is the standard reduction potential greater is the reducing power; hence the metal with more negative standard reduction potential can displace the other from its salt. Mg > Al > Zn > Fe > Cu Decreasing order in which these metals will displace other metals (For the values of standard reduction potential, see the electrochemical series).