Question

8. Practical based question
An experiment was performed in which an iron nail was dipped in copper sulphate solution,
After sometime, the nail was removed and a copper wire was dipped in the same solution
The solution was observed after sometime.
a. Complete the following observation table:
Solution of
Color change if any
Copper sulphate and iron
Iron sulphate and copper
C.
b. Write word equations for both the reactions.
Name the type of reaction that took place between the copper sulphate solution and
iron nail.​

Answer 1

Observation table :

$\begin{tabular}{|l|l|}\cline{1-2}Types of solution & Colour change (if any)\\ \cline{1-2} A. Copper sulphate and iron & Light green \\ & \\ B. Iron sulphate and copper & No change \\ \cline{1-2}\end{tabular}$

Word equation for both reactions :

Reaction 1 :

Iron + Copper sulphate $\longrightarrow$ Iron sulphate + Copper

Reaction 2 :

Iron sulphate + Copper $\rightarrow$ Iron sulphate + Copper

Reaction 2 will not occur as Iron is more reactive than copper , so copper could not replace iron from iron sulphate .

Type of reaction between copper sulphate solution and iron : Displacement reaction .

Displacement reaction : A reaction in which an element replaces the less reactive element from its compound forming another compound with the anion is called single displacement reaction .