If a reaction is exergonic, then which of these statements...

Name: Problem 2, Chapter 8: Biological Science
Uploaded: 2020-05-30T02:05:26-08:00
Duration: 1 min 28 s
Channel: Dr. Bridgette Drummond
Description: If a reaction is exergonic, then which of these statements is true? a. The products have lower free energy than the reactants. b. Energy must be added for the reaction to proceed. c. The products have lower entropy (are more ordered) than the reactants. d. The reaction occurs extremely quickly.

If a reaction is exergonic, then which of these statements is true? a. The products have lower free energy than the reactants. b. Energy must be added for the reaction to proceed. c. The products have lower entropy (are more ordered) than the reactants. d. The reaction occurs extremely quickly.

If a reaction is exergonic, then which of these statements is true?
a. The products have lower free energy than the reactants.
b. Energy must be added for the reaction to proceed.
c. The products have lower entropy (are more ordered) than the reactants.
d. The reaction occurs extremely quickly.

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Key Concepts

Exergonic Reaction

Exergonic reactions are processes in which the products possess lower free energy than the reactants, meaning energy is released during the reaction. This release of free energy is what drives the reaction forward, making it thermodynamically favorable, regardless of the specific reaction rate.

Thermodynamics vs. Kinetics

Thermodynamics deals with whether a reaction is energetically favorable, as indicated by parameters like Gibbs free energy, while kinetics concerns the rate at which a reaction occurs. An exergonic reaction, having a negative ?G, is thermodynamically spontaneous, but its actual speed can depend on factors like the activation energy barrier.

Gibbs Free Energy

Gibbs free energy is a thermodynamic function that combines enthalpy and entropy to predict the spontaneity of processes under constant temperature and pressure. A negative change in Gibbs free energy (?G) indicates that a reaction can proceed spontaneously, which is the defining criterion for an exergonic reaction.

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