Topic 15Chemistry
R1.4 Entropy and SpontaneityHL
Define entropy and predict sign changes, calculate Gibbs energy to determine spontaneity, analyse the four ΔH/ΔS sign combinations, and connect ΔG° to the equilibrium constant.
123
The Universe's Favourite DirectionHLSign up
What Is Entropy? · Predicting ΔS Sign · Calculating ΔS°
35 min
The Equation That Predicts EverythingHLSign up
Gibbs Energy Equation · Spontaneity & Four-Quadrant Table · Crossover Temperature
35 min
When ΔG Meets KHLSign up
ΔG° = −RT ln K · Predicting Equilibrium Position
30 min