STANDARD Chemistry Concentration Cells MCQ Question
What will be the emf of the following concentration cell at 25°C? Ag(s)|AgNO₃(0.01 M)||AgNO₃ (0.05M)|Ag(s)
0.828 V
0.0413 V
−0.0413 V
−0.828 V
Correct Answer
Detailed Explanation
The emf of a concentration cell is calculated using the Nernst equation. Since E° = 0 for concentration cells, E = −(0.0591/n) log(Q). Here, Q = [0.01]/[0.05], and n = 1, giving E = 0.0413 V.
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