Final answer:
The standard electrode potential can determine the feasibility of a redox reaction.
Step-by-step explanation:
The redox reaction is not feasible if the overall cell potential is negative. The cell potential (ΔE°cell) is calculated by subtracting the standard electrode potential of the anode (oxidation half-reaction) from the standard electrode potential of the cathode (reduction half-reaction).
Strategy A: Write the equation for the half-reaction that occurs at the anode along with the value of the standard electrode potential for the half-reaction. Strategy B: Calculate the standard electrode potential for the half-reaction that occurs at the cathode. Then reverse the sign to obtain the potential for the corresponding oxidation half-reaction under standard conditions.
If the redox reaction under consideration has a negative standard cell potential (as indicated by the value – E), it implies the reaction is not spontaneous under standard conditions. However, the actual feasibility of the reaction under nonstandard conditions can be assessed using the Nernst equation.