Which of the following is used in electroplating

Options

(a) AgCl
(b) AgNO₃
(c) sodium argentocyanide
(d) none of these

Correct Answer:

sodium argentocyanide

Explanation:

It is used for plating articles of base metals. The article to be plated is made the cathode while the anode consists of pure silver. The electrolyte is the solution of argentocyanide. As the complex ion is very stable the concentration of silver ion in solution is very small at any time. [Ag(CN)₂]⁻ .