Which of the following is true in the case of Zn-Cu cell?
Correct answer: C. Zinc acts as an anode and copper as cathode
- A. The flow of electrons takes place from copper to zinc
- B. Eoredof copper electrode is less than that of zinc electrode
- C. Zinc acts as an anode and copper as cathode
- D. All are correct
Explanation
Anode: The electrode where oxidation occurs (loss of electrons). Zinc is more readily oxidized than copper, meaning it loses electrons more easily. Hence, zinc acts as the anode in the Zn-Cu cell.Cathode: The electrode where reduction occurs (gain of electrons). Copper has a higher reduction potential than zinc, meaning it attracts electrons more readily. Therefore, copper acts as the cathode in the Zn-Cu cell.
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Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
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