Why is the cell potential temperature-dependent?
ABoth ΔG and the Nernst RT/nF term are T-dependent
BE does not depend on T
COnly for non-redox cells
DOnly when K = 1
Answer & Solution
Correct answer: A. Both ΔG and the Nernst RT/nF term are T-dependent
E° = -ΔG°/(nF), and ΔG° = ΔH° - TΔS°. So E° varies with T according to ΔS°. Also Nernst correction term has RT/F. Hence cells have specific 'standard temperature' (typically 25°C).
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