Question

Draw a neat and well labelled diagram for the silver plating on an iron spoon

Answer 1

Explanation:

experimental set up for electroplating

Answer 2

Electroplating : Silver plating on iron spoon

Explanation:

Electroplating

It is a application of electrolysis .

It is defined as the process of coating the desired metal on a article by the process of electrolysis .

In electroplating electrodes are :

Cathode - article to be coated

Anode - metal to be coated

Electrolyte : metal salt solution

For example in electrolysis of silver on iron spoon :

Electrodes are :

• cathode : iron spoon
• Anode : Silver metal
• Electrolyte : Silver nitrate solution

On passing current : AgNO₃----> Ag⁺ + NO₃⁻

Reaction at cathode :

Ag⁺ + 1electron --> Ag

Reaction at anode :

Ag-1e--> Ag⁺

In solution we have Ag⁺ and nitrate ions .

Electrolyte :