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CHEMISTRY

JAMB 2011 - Question 24

Chemistry 2011 JAMB Past Questions - Question 24: The function of zinc electrode in a galvanic cell is that it

Choose the correct answers from the options given.

The function of zinc electrode in a galvanic cell is that it

A: undergoes reduction

B: serves as the positive electrode

C: produces electons

D: uses up electrons.

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Correct Answer

Explanation

The function of the zinc electrode in a galvanic cell is primarily to serve as the anode. In a galvanic cell, oxidation occurs at the anode. In the case of a zinc electrode, zinc atoms undergo oxidation, losing electrons to form zinc ions (Zn^2+). These electrons flow through the external circuit to the cathode, where reduction occurs.

In summary, the zinc electrode facilitates the oxidation half-reaction (Zn -> Zn^2+ + 2e^-) necessary for the overall redox reaction to proceed in the galvanic cell.