Question

The electrolyte used for electroplating an article with silver is:

• A. silver nitrate solution
• B. silver cyanide solution
• C. sodium argentocyanide solution
• D. nickel sulphate solution

Answer 1

Answer: (C)

sodium argentocyanide solution

Electroplating is the electrolytic process of deposition of a metal on the surface of a base metal or article.

An aqueous solution of sodium argentocyanide is used for the electrolysis of silver as the migration of $A{g}^{+}$ ions is slow in this solution as compared to $AgN{O}_3$. Hence, an even deposition of the silver metal is obtained on the article.