Question

If an iron nail is placed in an aqueous
solution of copper (II) sulphate as shown in
Fig. 10.2, the iron displaces copper from its
aqueous solution and the so formed copper
deposits over the iron nail.
It is east to propose so many reactions of this kind with different combinations of reactants . "Will they all occur in practice?"No.

What is the meaning of the quoted sentence ?​

Answer 1

Answer:

Fe(s)+CuSO 4 ⟶Cu(s)+FeSO  4

​When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green. This reaction shows that iron is more reactive than copper as it displaces copper from its solution and iron passes into solution as Fe  2+  ions and ferrous sulphate solution is formed.