3.1.8.2 - gibbs free - energy change, 🔼G and entropy change

A reaction that can occur at a particular temp. + once started will carry on to completion w/out any energy being supplied to it is called a

a measure of disorder w/in a system.

J K-1 mol-1

physical state dissolution number of particles

gases are more disordered than liquids and solutions. Liquids and solutions are more disordered than solids. So, with that, physical state affects entropy

dissolving a solid increases its entropy as dissolved particles can move freely because they are no longer held in fixed positions.

more moles of particles increased entropy. The more particles there are, the more ways they, and their energy can be arranged.

the higher the degree of disorder of a substance. Therefore gases have the highest absolute entropy value.

∆S = [sum of ∆SƟ products] - [sum of ∆SƟ reactants]

∆G = ∆H – T∆S

used to predict whether a reaction is feasible.

must be equal to or less than zero (i.e. 0 or -ve)

changeH - TchangeS

divide by 1000 to get kj

change in HS