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Electrochemical Cells, Galvanic Cells

The electrode...

Question

The electrode potential of oxidation half-cell is:

A

is independent of the concentration of ions in the cell

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B

decreases with decreased concentration of ions in the cells

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C

decreases with increased concentration of ions in the cells

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D

none of these

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Solution

The correct option is C decreases with increased concentration of ions in the cells
$M ⟶ m^{+} + e^{-}$
Nernst equation -
$E_{c e l l} = E^{o} - \frac{0.0591}{n} log [m^{+}]$
Hence,
As concentration of ions $↑, E_{c e l l}$ decreases.

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