JEE AdvancedChemistryElectrochemistryMCQ+3 / −0.75
For the following cell, when the concentration of is times the concentration of the expression for (in ) is [ is Faraday constant; is gas constant; is temperature; (cell) ]
- A
- B
- C
- D
View written solutionFree
Correct answer: B
- Cell reaction
For the cell
The overall reaction is:
Here, number of electrons transferred:
- Reaction quotient
For the reaction,
Given: So,
- Use Nernst equation
At general temperature ,
Substitute , , and :
Since we get
- Relate and cell emf
We use:
So,
Now simplify:
Thus,
- Option check
- A: ❌
- B: ✅
- C: ❌
- D: ❌
Hence the correct option is B.
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