Question

Reduction of Fe³⁺ to Fe²⁺ by Au(s). E° Fe³⁺, Fe²⁺ = 0.77, E°Au = 1.4 V

Predict whether the given reaction occur under standard state conditions.

Answer 1

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Answer 2

• The given reaction can take place under standard state conditions.
• The question presents data of the reduction of Fe³⁺ to Fe²⁺ at Au electrode.
• The standard reduction potential for Fe³⁺/Fe²⁺ couple is 0.77 V, while that of Au is 1.4 V.

• Therefore, when potential is applied to the electrode, the reduction from Fe³⁺ to Fe²⁺ occurs before the reduction of gold.
• Hence, the reaction is spontaneous and readily occurs under standard state conditions.