Which of the following statement is incorrect for a galvanic cell?
Correct answer: C. Electrons flow from cathode to anode
- A. Oxidation occurs at anode
- B. Reduction occurs at cathode
- C. Electrons flow from cathode to anode
- D. Both A and B
Explanation
In a galvanic cell, the flow of electrons is from the anode to the cathode through an external circuit. This is because oxidation occurs at the anode, releasing electrons, while reduction occurs at the cathode, gaining these electrons. Therefore, the statement 'Electrons flow from cathode to anode' is incorrect. Options A and B are correct as oxidation occurs at the anode and reduction at the cathode, respectively. Option D is incorrect because both A and B are correct descriptions of the processes in a galvanic 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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