For a certain cell, E⁰ = 1.20 V at 298 K. If the temperature coefficient is -3.8 × 10⁻⁴ V / K, the entropy change is
Q1. For a certain cell, E⁰ = 1.20 V at 298 K. If the temperature coefficient is -3.8 × 10⁻⁴ V / K, the entropy change is
Answer: -73.4 J / K mol
Explanation: Using ΔS = nF(dE/dT), where n = 2 (assuming), F = 96500 C / mol, dE/dT = -3.8 × 10⁻⁴ V / K.