For a electrochemical cell Zn \| Zn^2+ (C1 M) \|\| Cu^2+ (C2 M) \| Cu, the decrease in free energy a — Electrochemistry Chemistry Question

💡 Solution & Explanation

The decrease in free energy is given by -ΔG = nFE = nF[E° - (RT/nF)*ln(C1/C2)]. Since E° is constant at a given temperature, the change in free energy strictly depends on the logarithmic concentration ratio term, ln(C1/C2). Therefore, correct answer is D.