Question

During electroplating an article with silver, the electrolyte used is ______.

Options

• Silver nitrate solultion

• Silver cyanide solution

• Sodium argentocyanide solution

• Nickel sulphate solution

Answer 1

During electroplating an article with silver, the electrolyte used is sodium argentocyanide solution.

Explanation:

Sodium argentocyanide is a complex salt that dissociates very slowly in an aqueous solution. This slow dissociation controls the concentration of free silver ions, allowing them to migrate toward the cathode at a steady pace. As a result, the silver deposits slowly and smoothly, creating a highly uniform, firm, and shiny coating over the article.