Gibbs Free Energy

G = H - T S

Maximum non-expansion work at constant T and P. ΔG < 0 for spontaneous processes.

Variables

Gibbs free energy

Available work at const P,T

Enthalpy

H = U + PV

Temperature

Absolute temperature

Entropy

System entropy

J/K

G = H - TS. At constant T,P: ΔG = ΔH - TΔS. Process is spontaneous if ΔG < 0.

0/5000