A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide. State one condition to ensure that the deposit is smooth, firm and long lasting.

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Solution

Electroplating is a process in which the coating of metal is done with a thin layer of another metal.
In the electroplating with silver, Sodium argentocyanide is used as an electrolyte and for making the plating process smooth, firm, and long-lasting, a low electric current is used i.e. DC is used for a long time in the electroplating process so that the deposition becomes slow and there is a smooth and uniform plating on the metal article.

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