On the basis of knowledge of electrochemical series, which reaction is not feasible:
Correct answer: C. C
- A. A
- B. B
- C. C
- D. D
Explanation
The correct answer is Option C. Copper (Cu) is below hydrogen in the electrochemical series, which means it cannot displace hydrogen from dilute sulfuric acid, making the reaction not feasible. In contrast, all other reactions involve elements that are higher in the electrochemical series displacing those that are lower, making them feasible. Zinc can displace hydrogen (Option A), fluorine can displace chlorine (Option B), and chlorine can displace bromine (Option D) due to their respective positions in the electrochemical series.
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