Question

What Is The Speciality Of Silver Cyanide That Its The Compound Used For Electroplating Of Silver

Answer 1

Electroplating: Electroplating produces a very thin coating of expensive metals on the surfaces of cheaper metals, to give them the appearance and the chemical resistance of the expensive ones.

In electroplating with silver, silver cyanide is used in the electrolyte rather than other compounds of silver such as silver nitrate, AgNO₃, because the cyanide ion, CN^-, reacts with silver ion, Ag⁺, to form the complex ion Ag(CN) ^-. This limits the supply of free Ag⁺ ions in the solution, so they can deposit themselves only very gradually onto the cathode. This produces a shinier and more adherent silver plating.