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Nernst Equation

The standard ...

Question

The standard electrode potential of Zinc is 0.76, V. The potential of 0.1M zinc electrode is:

0.8196 V

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0.7895 V

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0.9484 V

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0.7508 V

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Solution

The correct option is B 0.7895 V
$E_{c e l l} = E_{c e l l}^{\circ} + \frac{R T}{n F} l o g [Z n^{+}]$

$E_{c e l l} = - 0.76 + \frac{0.059}{2} l o g (0.1)$

$= - 0.789$

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