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Nernst Equation

For the half ...

Question

For the half cell $E^{o} = 1.30 V$ . At $p H$ $= 3$ , electrode potential is:

1.30 V

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1.20 V

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1.10 V

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1.48 V

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Solution

The correct option is D $1.48 V$
In this equation: $E = E^{0} - \frac{0.0591}{2} l o g [H^{+}]^{2}$

$= E^{0} - 0.0591. l o g [H^{+}]$

$= E^{0} + 0.0591 p H$

$= 1.30 + 0.0591 \times 3$

$= 1.48 V$

Hence, the correct option is $D$

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