Question

Question 2
a) When iron nails are immersed in copper sulphate solution, the nails get coated with
a metal. Identify the metal coating, and represent the chemical change using a
balanced equation​

Answer 1

Answer:-

Iron nails are immersed in copper sulphate solution , the nails got coated with a metal.

When Iron nails are sunk in the copper sulphate solution, the iron reacts with the sulphate ion and displaces copper, then forms Iron sulphate.

This is an example of Chemical displacement reaction.

"The reaction in which a high reactive metal displaces less reactive metal (when compared with it) in its aqueous solution is called Chemical displacement reaction".

After this reaction, a brown layer of copper is formed on the nail.

Required chemical equation :

$\sf \large{ {CuSO _{4}} _{(aq)} + Fe _{(s)} \longrightarrow \: {FeSO _{4} }_{(aq)} + Cu_{(s)}}$

Hence, the layer of the metal formed on the nail is Copper.

Answer 2

When Iron nails are immersed in copper sulphate solution , the nails get coated with the metal with high reactivity. When Iron nails are sunk in the copper sulphate solution, the Iron reacts with the Copper Sulphate solution and as Fe is more reactive than copper, it displaces copper from the solution and forms iron sulphate.

After this reaction, a layer of copper gets deposited on the nail.

Chemical equation :

CuSO4(aq)+Fe(s)⟶FeSO4(aq)+Cu(s)

━━━━━━━━━━━━━━━━━

▪Thus, the layer of the metal formed on

the nail is of $\red{\bold{Copper.}}$

━━━━━━━━━━━━━━━━━

What is displacement reaction?

The reaction in which a high reactive metal displaces less reactive metal from its aqueous solution is called Chemical displacement reaction.