Lesson 7: Gibbs Free Energy

These flashcards cover key concepts from Lesson 7, focusing on Gibbs Free Energy and related terms.

Spontaneous Reaction

A reaction that occurs without the need for external energy.

Instantaneous Reaction

A reaction that happens immediately at a certain rate.

Gibbs Free Energy (G)

Energy available to do work in a thermodynamic system.

Enthalpy (H)

Total energy in a system, including both internal energy and energy associated with pressure and volume.

Entropy (S)

A measure of the disorder or randomness of a system.

ΔG = ΔH - TΔS

The equation for change in Gibbs free energy, where ΔG represents free energy change, ΔH is enthalpy change, T is absolute temperature, and ΔS is entropy change.

Positive ΔG Reactions

Reactions that require energy and are non-spontaneous; products have more free energy than reactants.

Negative ΔG Reactions

Reactions that tend to occur spontaneously; products have less free energy than reactants.

Endothermic Reaction

A reaction that absorbs energy, resulting in positive ΔG.

Exothermic Reaction

A reaction that releases energy, resulting in negative ΔG.