Spontaneity and Gibbs Energy
What determines whether a reaction happens on its own, without outside help.
Entropy
Entropy (S) is a measure of the randomness or disorder of a system. The Second Law of Thermodynamics states that the total entropy of the universe always increases for a spontaneous process.
Gibbs Energy
ΔG = ΔH - TΔS
A reaction is spontaneous when its Gibbs energy change (ΔG) is negative.
Lesson 14 of 26