Question

An article made of an ordinary metal is desired to be coated with gold by electroplating, then gold has to be:

• A. Made as the electrolyte of the electrolytic cell.
• B. Made as the anode of an electrolytic cell.
• C. Made as the connecting wire in the electrolytic cell.
• D. Kept immersed in the electrolyte solution.

Answer 1

The correct option is B Made as the anode of an electrolytic cell.

Electroplating is a process for coating a conductive object with a thin layer of a material, such as a metal. An electrical current is used to reduce cations of a desired material from a solution onto the object. Electroplating is primarily used for depositing a layer of material to bestow a desired property (e.g., abrasion , wear resistance, corrosion protection, lubricity, aesthetic qualities, etc.) to a surface that otherwise lacks that property. Another application uses electroplating to build up thickness on undersized parts.An article made of an ordinary metal is desired to be coated with gold by electroplating, then gold has to be made as the anode of an electrolytic cell.