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Nernst Equation

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By Expert Faculty of Sri Chaitanya
Question

For the cell reaction:

2Fe(aq)3++2I(aq)-2Fe(aq)2++I2(aq)

Eocell =0.24 V at 298 K. The standard Gibbs energy ΔrG°of the cell reaction is

 [Given that Faraday constant F=96500Cmol-1

Moderate
Solution

 The standard Gibbs' energy ΔG°=-nFE°cell   Value of n=2  ΔG°=-2×96500×0.24=-46320 J=-46.32 kJ/mol


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