A Cu/Cu2+ concentration cell has a voltage of 0.22 V at 298K. The concentration of Cu2+ in one of the half-cells is 1.6E−3 M. What is the concentration of Cu2+ in the other half-cell?
Let us first describe the half-equations happening in the cell and write the overall equation:
Overall equation :
For concentration cells, we can calculate the cell potential
Replacing the giving terms in this equation assuming that the given concentration is
Here is a video that explains in details the concentration cell and the Nernst Equation:
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