If the accompanying drawing of an electrochemical cell represents an iron-nickel cell,use the partial activity series included to describe the component labeled 2. Zn $\rightarrow$ Zn²⁺ + 2e^- Fe $\rightarrow$ Fe²⁺ + 2e^- Co $\rightarrow$ Co²⁺ + 2e^- Ni $\rightarrow$ Ni²⁺ + 2e^- Cu $\rightarrow$ Cu²⁺ + 2e^-

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Quizplus · Accepted Answer

Component labeled 2 is connected to the cathode, therefore it must be a cathode itself. Since the cell is an iron-nickel cell, the cathode must be made of nickel (as stated in the partial activity series), so the best choice is D) nickel cathode.

If the Accompanying Drawing of an Electrochemical Cell Represents an Iron-Nickel