# Entropy and Free Energy Menu

Introducing entropy

A simple, non-mathematical introduction to entropy.

Calculating entropy changes during reactions

Using data book values for entropy to calculate the entropy change during a reaction.

Adding a bit of complication

Looks at the various types of entropy change during a reaction: the entropy changes of the system, of the surroundings and the total entropy change, and how they are related. How to use total entropy change to predict the feasibility of a reaction.

An introduction to Gibbs free energy

Introducing Gibbs free energy, and how you can use it to predict the feasibility of reactions.

The relationship between Gibbs free energy and equilibrium constants

A very brief introduction to the equation relating ΔG and equilibrium constants.