
The value of [Aāŗ] / [Bāŗ], when Ecell =E°cell is 1.
Given conditions are ,
The voltaic cell consists of A/Aāŗ and B/Bāŗ are half-cells.
where A and B are metals and A electrode is negative.
Also, Ecell > E°cell.
We have to find the value of [Aāŗ] / [Bāŗ] when Ecell = E°cell.
Ecell = E°cell - (0.0592/n) log Q
where Q is [Aāŗ]/[Bāŗ].
As Ecell = E°cell, then putting values in the above equation, we get
0 - (0.0592/n) log Q
or, Q = 1
or, [Aāŗ]/[Bāŗ] = 1
Therefore the value of [Aāŗ]/[Bāŗ] is 1 when Ecell = E°cell.
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