Question

. An engineer attaches a piece of silver to the iron storage tank in an attempt to supply the tank with cathodic protection.

Which is the anode in this cell? and Which is the cathode in this cell?

Answer 1

In this cell, the iron storage tank is the metal that needs protection against corrosion, and the piece of silver is the anode that will provide the cathodic protection. The silver anode will corrode instead of the iron tank, and this will protect the iron from oxidation. Therefore, the iron storage tank is the cathode in this cell.