Question

In the electroplating of iron by nickel, nickel sulphate solution is taken as electrolyte. What is the acid that is added to the electrolyte during the process?
A)$HCl$
B)$HCN$
C)$HN{O_3}$
D)${H_2}S{O_4}$

Answer 1

Hint:In the word ‘Electroplating’ electro refers to electric current and the word plating refers to outer covering of some materials with a thin layer of a different metal. Electroplating is defined as the process of plating a layer of any metal on the other material by passing electric current.

Complete step by step answer: The common process of electroplating uses a cell, which consists of putting a charge on the metal and dipping it into a solution containing metal salt which contains charged metal ions. Then, due to the negative and positive charges, the \[2\] metals are interested in one another
The Purposes of Electroplating are,
Appearance
Protection
Special surface properties
Engineering or mechanical properties
Background
The cathode would be the piece to be plated and therefore the anode would be either a sacrificial anode or an inert anode, normally either platinum or carbon (graphite form).
Choosing the Electrolytes:
There are many various metals which will be utilized in plating then determining the proper electrolyte is vital for the standard of plating. Some electrolytes are acids, bases, metal salts or molten salts. The electrolytes are selected based on corrosion, resistance, brightness or reflectivity, hardness, mechanical strength, ductility, and wear resistance.
To adjust the $pH$ level during the electroplating of nickel sulfuric acid is used as electrolyte.
Therefore, the option D is correct.


Note: Now we discuss the types of Electroplating.
There are different processes by which individuals can electroplate metals like by mass plating (also barrel plating), rack plating, continuous plating, and line plating. Each process has its own set of procedures which permit for the perfect plating.