Many reactions that have large, negative values of ΔG^∘ are not actually observed to happen at 2

step 1 This question, again, attempts to help you separate in your mind thermodynamics, which is Gibbs

Many reactions that have large, negative values of ΔG^∘ are...

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Key Concepts

Thermodynamic Favorability

Thermodynamic favorability, as indicated by a negative ?G°, means that a reaction is energetically capable of proceeding toward products under standard conditions. This concept provides insight into whether a reaction is spontaneous once equilibrium is achieved. However, it does not necessarily reflect the rate at which the reaction occurs, which is why even reactions with large, negative ?G° may not be observed to occur at room temperature or under standard conditions if other factors are unfavorable.

Kinetic Control and Activation Energy

Kinetic control pertains to the reaction rate, which is determined by the energy barrier known as the activation energy. Even if a reaction is thermodynamically favored, a high activation energy can prevent the reaction from proceeding at an observable rate under given conditions. This concept explains why many reactions, despite having a favorable free energy change, may be extremely slow or appear not to occur at standard conditions.

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