Answer and Explanation:
In order to predict the feasibility of redox processes, standard electrode potentials are majorly employed. Generally, if the electrode potential for the reaction is positive, it is considered to be feasible. However, some conditions affect this statement
The value of E° talks about the feasibility of the reaction under standard conditions only and says nothing about the reaction rate.
A positive value of E° means, the equilibrium constant K is greater than 1; while a negative value of E° means, that it is less than 1.
The attachment below shows the simple analysis of the feasibility of two different reactions A and B, at standard and non standard conditions respectively.
NOTE: Standard conditions for Redox reaction: 298.15K(Temperature), 1 atm(Pressure), 1.0M(Concentration) for both anode and cathode.
Non standard conditions for Redox reaction: Any of the 3 conditions above are changed, especially the concentration.
