Answer:
Option C is the correct statement.
ℰ°cell will increase with an increase in temperature
Explanation:
To understand this problem it is neccessarry to state the relatioonships between the various paramenters mentioned in the question. these parameters include ΔH°, ΔS°, ΔG° and ℰ°Cell.
ΔH°, ΔS°, ΔG° are related with the following equation;
ΔG° = ΔH° - TΔS°
From the above equation we see that ΔG° cannot be greater than 0 for all temperatures. At higher temperatures, ΔG° becomes a negative value.
A spontaneous redox reaction is characterized by a negative value of ΔG and a positive value of ℰ°Cell, consistent with our earlier discussions. When both reactants and products are in their standard states, the relationship between ΔG° and ℰ°Cell is as follows:
ΔG∘=−nFℰ°Cell where;
F = Faraday and n = number of moles
Since ΔG° becomes negative at higher temperatures, it means ℰ°Cell would increase as temperature increases.
The relationship between G, Ecell and temperature can be given as;
Increase in Temperature = Negative value of G = Increase in E
Due to the fact established above; options B, D and E are false. This means the correct option is option C - ℰ°cell will increase with an increase in temperature
