For a strictly spontaneous electrochemical reaction operating under constant temperature and pressure, which of the following sets of conditions uniquely apply to the Gibbs free energy change (), the

Question

For a strictly spontaneous electrochemical reaction operating under constant temperature and pressure, which of the following sets of conditions uniquely apply to the Gibbs free energy change ($\Delta G$), the equilibrium constant ($K_{eq}$), and the standard cell potential ($E^\circ_{cell}$)?

Prashant Kotian · Accepted Answer

Correct answer: A. A thermodynamically spontaneous process strictly dictates that the total change in Gibbs free energy is negative (). Through the relation , a spontaneous forward reaction corresponds to an equilibrium constant greater than 1 (). Additionally, , so a negative mathematically requires a positive cell electromotive force ().

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