STANDARD Chemistry Galvanic Cells MCQ Question
The cell reaction of the galvanic cell : Cu(s)|Cu²⁺(aq)||Hg²⁺(aq)|Hg(l) is
Hg + Cu²⁺ → Hg²⁺ + Cu
Hg + Cu²⁺ → Cu⁺ + Hg⁺
Cu + Hg → Cu⁺ + Hg⁺
Cu + Hg²⁺ → Cu²⁺ + Hg
Correct Answer
Detailed Explanation
In a galvanic cell, the reaction occurs spontaneously. The reduction potential of Cu²⁺/Cu is higher than that of Hg²⁺/Hg, so Cu will oxidize and Hg will reduce, resulting in the reaction Cu + Hg²⁺ → Cu²⁺ + Hg.
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