Home › JEE Advanced › Chemistry › Electrochemical Series › Why is the cell potential temperature-dependent?
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).
Related questions
The electrolytes of the two half-cells are joined by a:The two portions of a galvanic cell are also called:In the Daniell cell, zinc dissolves at the anode and copper:A negative standard potential marks a reducing agent that is:Going from top to bottom of the table, the electrode potential:The weakest oxidising agent in the table of potentials is:The most powerful reducing agent in aqueous solution is:The weakest reducing agent in the table of potentials is: