27. The standard cell potential for the reaction is 1.67 V at 298K. Calculate the standard Gibbs free energy change () in kJ/mol. (Use 1 F = 96500 C/mol)

Question

27. The standard cell potential $E^\circ$ for the reaction $2Fe(s) + O_2(g) + 4H^+(aq) \rightarrow 2Fe^{2+}(aq) + 2H_2O(l)$ is 1.67 V at 298K. Calculate the standard Gibbs free energy change ($\Delta G^\circ$) in kJ/mol. (Use 1 F = 96500 C/mol)

Prashant Kotian · Accepted Answer

Correct answer: B. The balanced redox reaction transfers 4 moles of electrons (), so . J/mol = -644.6 kJ/mol.

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