In the figure given below, the electron flow in external circuit is from:
Correct answer: D. Zinc to copper electrode
- A. Copper to zinc electrode
- B. Right to left
- C. Porous partition to zinc electrode
- D. Zinc to copper electrode
Explanation
The electrons flow from the oxidation reaction (Zn (s) --> Zn2+ (aq) + 2 e-) to the reduction half-cell (Cu2+ (aq) + 2 e- --> Cu (s)). So the electrons flow from the left to the right (zinc to copper electrode).
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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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