What Does a Large Positive ΔE₀' Indicate for a Redox

Question

What does a large positive ΔE₀' indicate for a redox reaction?
A)It is endergonic.
B)It has a positive ΔG⁰'.
C)It will require an input of energy.
D)It is spontaneous.
E)It is energetically unfavorable.

Accepted Answer

A large positive ΔE₀' indicates that the redox reaction is spontaneous, as it suggests a strong tendency for the reaction to proceed in the forward direction. ΔE₀' is related to the Gibbs free energy change (ΔG⁰') for the reaction by the equation ΔG⁰' = -nFE₀', where n is the number of moles of electrons transferred and F is the Faraday constant. A positive ΔE₀' thus corresponds to a negative ΔG⁰', indicating spontaneity.