During the electrolysis of molten lead bromide, which of the following takes place?  

A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide.

What kind of salt is sodium argentocyanide ?

 A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide.

Why is it preferred to silver nitrate as an electrolyte.

 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.

 A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide

Write the reaction taking place at the cathode

 A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide

Write the reaction taking place at the anode.

Aqueous solution of nickel sulphate contains ${\mathrm{Ni}}^{2+}$and ${{\mathrm{SO}}_4}^{2-}$ ions

Which ion moves towards the cathode