Gibbs Free energy
Posted: Tue Feb 06, 2018 11:04 am
In the textbook it says the Gibbs free energy of the solid phase lies the lowest. If the entropy of a gas is the highest (compared to liquids and solids), shouldn't the free energy of the gas be the lowest at a certain temperature?
Re: Gibbs Free energy
Posted: Tue Feb 06, 2018 5:03 pm
Yes Gibbs free energy is lowest as a solid because it takes heat and a positive deltaH for the substance to go from a solid to a liquid and from a liquid to a gas. So even though the entropy might be greater as a gas, the enthalpy is higher so the overall G is higher in gases.