Concentration Cell
Mediumchemistry
In a concentration cell with identical electrodes, driving force arises from:
Select the correct option:
Solution
Incorrect! Answer:
Difference in ion concentration
- Definition: A cell consisting of two half-cells with identical electrodes and identical electrolytes, but at different concentrations.
- Standard Potential: Since the electrodes are the same (e.g.,Ag/Ag+), Ecathode∘=Eanode∘⟹Ecell∘=0.
- Operating Potential: Using the Nernst equation: Ecell=0−n0.0591log[C2][C1].
- Work: The cell performs work as it tries to equalize the concentrations of the two half-cells (moving towards maximum entropy).
- Rule: For a positive Ecell, the more concentrated solution must be the cathode.
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
More concentration cell Practice Questions
About This Question
- Subject
- chemistry
- Chapter
- electrochemistry
- Topic
- concentration cell
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Difference in ion concentration
- Definition: A cell consisting of two half-cells with identical electrodes and identical electrolytes, but at different concentrations.
- Standard Potential: Since the electrodes are the same (e.g.,Ag/Ag+), Ecathode∘=Eanode∘⟹Ecell∘=0.
- Operating Potential: Using the Nernst equation: Ecell=0−n0.0591log[C2][C1].
- Work: The cell performs work as it tries to equalize the concentrations of the two half-cells (moving towards maximum entropy).
- Rule: For a positive Ecell, the more concentrated solution must be the cathode.
This medium difficulty chemistry question is from the chapter electrochemistry, covering the topic of concentration cell. It appeared in the 2025 exam.
Looking for more practice? Explore all chemistry questions or browse electrochemistry questions on RankGuru.