The Standard Reduction Potentials Are as Follows: Cr³⁺(aq)+ 3 E^-

question 46

Multiple Choice

The standard reduction potentials are as follows: Cr³⁺(aq) + 3 e^- → Cr(s) ; E° = -0.74 V
Fe²⁺(aq) + 2 e^- → Fe(s) ; E° = -0.41 V
Calculate the standard Gibbs free energy change for the following reaction.
2 Cr(s) + 3 Fe²⁺ → 3 Fe(s) + 2 Cr³⁺(aq)

• A) 191 kJ
• B) 63.7 kJ
• C) -504 kJ
• D) -191 kJ
• E) 1060 kJ

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