A concentration cell is made up of two electrodes, where one electrode has and the other has . What is the cell potential at if the cell is connected with a salt bridge and the standard potential of electrode is with respect to S.H.E. ?
0.050 V
0.100 V
0.150 V
0.200 V
The cell's balanced redox equation is:
This half-reaction's standard reduction potential is:
At 25°C, the Nernst equation becomes:
where
Plugging in the values, we get:
Since the higher concentration of silver ions will lose electrons and the lower concentration will gain electrons, the cell potential will be the difference in potentials of the two electrodes:
The correct option is (1) 0.050 V.
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