Gibbs free energy
Gibbs free energy change
The increase or decrease of the Gibbs free energy of a system. During a
reaction, this is equal to the change in enthalpy of the system minus the
change in the product of the temperature times the entropy of the system: ΔG = ΔH - T ΔS. A negative value indicates that the reaction will be favoured and will
release energy. The magnitude of the value indicates how far the reaction
is from equilibrium, where there will be no free energy change. The
standard unit of measure is kJ/mol. Symbol: ΔG.