Question

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

a. Which has a higher reduction potential — silver or iron?

b. Which is the anode in this cell?

c. Which is the cathode in this cell?

d. Does attaching a piece of silver provide the iron storage tank with cathodic protection? Explain why or why not.

e. Name two metals that would provide the iron storage tank with cathodic protection.