What we call “tin cans” are really iron cans coated with a thin layer of tin. The anode is a bar of tin and the cathode is the iron can. An electrical current is used to oxidize the Sn to Sn2+ in solution, which is reduced to produce a thin coating of Sn on the can.
a. What half-reaction takes place to tin plate an iron can?
b. Why is the iron can the cathode?
c. Why is the tin bar the anode?
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