Consider the Following Reaction and Its Standard Molar Gibbs Free-Energy

question 70

Multiple Choice

Consider the following reaction and its standard molar Gibbs Free-Energy of reaction:
2 Fe₃+ (aq) + Hg 2 2+ (aq) 2 Fe₂+ (aq) + 2 Hg 2+ (aq) D G rxn = 2.87 kJ/mol What is the molar Gibbs Free-Energy of reaction at 500 K under non-standard conditions when Fe₃+ = 0.25 M, Hg 2 2+ = 0.33 M, Fe₂+ = 0.15 M and Hg 2+ = 0.32 M?

• A) D G _rxn = - 6.24 kJ/mol
• B) D G _rxn = 0.619 kJ/mol
• C) D G _rxn = 2.78 kJ/mol
• D) D G _rxn = 9.11 kJ/mol
• E) D G _rxn = 12.0 kJ/mol

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