Consider two galvanic cells operating under standard conditions

CHEMISTRY · Subjective · A Level · Chemistry · Electrode potentials · Electrode potentials

Problem

Consider two galvanic cells operating under standard conditions. Cell A: Fe³⁺/Fe²⁺ half-cell coupled with Cu²⁺/Cu half-cell. Cell B: Fe²⁺/Fe half-cell coupled with Cu²⁺/Cu half-cell. Relevant standard reduction potentials: Fe³⁺ + e⁻ → Fe²⁺ E∘=+0.77 VE^\circ = +0.77\,\text{V} Fe²⁺ + 2e⁻ → Fe(s) E∘=−0.44 VE^\circ = -0.44\,\text{V} Cu²⁺ + 2e⁻ → Cu(s) E∘=+0.34 VE^\circ = +0.34\,\text{V} (a) Determine which cell (A or B) produces a more negative ΔG∘\Delta G^\circ. (b) Calculate the numerical difference in ΔG∘\Delta G^\circ between the two cells (include units).

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