If a rough stainless steel spoon is to be electropolished, then the steel spoon is taken as the ___ in the electrolytic bath with copper and lead and a suitable electrolyte.

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Solution

The part to be plated is the cathode of the circuit. The anode is made of the metal to be plated. Both components are immersed in a solution called an electrolyte containing one or more dissolved metal salts as well as other ions that permit the flow of electricity. A power supply supplies a direct current to the anode, oxidizing the metal atoms that it comprises and allowing them to dissolve in the solution. At the cathode, the dissolved metal ions in the electrolyte solution are reduced at the interface between the solution and the cathode, such that they "plate out" onto the cathode.

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