Question

Explain the process of electroplating with
the help of an experiment to coat a
spoon with silver.​

Answer 1

Explanation:

Another important use of electrolytic cells is in the electroplating of silver, gold, chromium and nickel. Electroplating produces a very thin coating of these expensive metals on the surfaces of cheaper metals, to give them the appearance and the chemical resistance of the expensive ones.

In silver plating, the object to be plated (e.g., a spoon) is made from the cathode of an electrolytic cell. The anode is a bar of silver metal, and the electrolytic(the liquid in between the electrodes) is a solution of silver cyanide, AgCN, in water. When a direct current is passed through the cell, positive silver ions(Ag+) from the silver cyanide migrate to the negative anode ( the spoon), where they are neutralized by electrons and stick to the spoon as silver metal.

Answer 2

Explanation:

FIRST OF ALL,

Electroplating is the process of depositing a layer of metal over any other material.

Let's perform an experiment to understand it better.

Procedure :- Make an electric circuit . Join the positive end of the circuit (battery) with a silver plate and the negative end with a spoon.

The negative end is cathode that will attract positive ions. The positive end is the anode.

Step -1 . After making the circuit, dip the anode and the cathode attached to the circuit in a silver sulphate solution.

Step 2. Now, turn on the electric current.

Step 3. After sometime, we will see silver deposited on the spoon which is connected the the negative terminal of the circuit (battery) and the size of the silver plate working as an anode will be reduced.

Conclusion:- Hence, when electricity will pass through the silver sulphate solution, it will split into silver ions and sulphur ions. This is called electrolysis. The silver ions are positively charged so they will get attracted to the spoon which is connected to negative terminal of battery. At the same time, the silver plate working as an anode will lose silver ions into the solution and then from the solution, the silver ions will get attracted to the cathode (spoon). As a result, the concentration of the solution will remain constant until the current is flowing.