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41. Consider a macroscopic electrochemical cell that has operated until it reached true chemical equElectrochemistry Chemistry Question

Question

41. Consider a macroscopic electrochemical cell that has operated until it reached true chemical equilibrium. Which of the following thermodynamic states must simultaneously and strictly hold true?

Answer: C

💡 Solution & Explanation

At chemical equilibrium, the net driving thermodynamic force is zero ($\Delta G = 0$). Since $\Delta G = -nFE_{cell}$, the operating cell potential $E_{cell}$ also strictly equals zero. The standard values ($\Delta G^\circ$ and $E^\circ_{cell}$) remain fixed constants.

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