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Properties of Water

The standard ...

Question

The standard free energy change for the following reaction is -210 kJ. What is the standard cell potential?
$2 H_{2} O_{2} (a q) \to 2 H_{2} O (l) + O_{2} (g)$

0.752

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1.09

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0.42

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0.64

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Solution

The correct option is C 1.09
$n = 2$ for given reaction so $Δ G^{\circ} = - n F E^{\circ}$
$\Rightarrow$ $- 210 \times 1000 = - 2 \times 96500 \times E^{\circ}$
$E^{\circ} = 1.09 V$ {Option B}

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