Free energy change (∆G)&Standard state free energy change(∆G°),∆G&∆G° Difference,∆G=0at Equilibrium

In this video free energy change (∆G)and standard state free energy change (∆G°)of a chemical reaction is explained. The calculation of free energy change and standard state free energy change from chemical potentials and standard state chemical potentials of reactants and products has also been discussed. The difference between free energy change and standard state free energy change has also been explained. ∆G° is is constant for a particular reaction as it is a understand conditions. Where as ∆G is the free energy change at actual concentrations when the reaction is progressing. Chemical equilibrium is also explained in terms of free energy change. The value of ∆G=0 at Chemical equilibrium. Spontaneity of a chemical reaction is also explained in terms of free energy change. ∆G is negative for spontaneous reaction and positive for non spontaneous reactions.