- $$\Delta G = \Delta G^\circ + RT \ln(Q) \qquad \Delta G^\circ = -2.303 RT \log_{10}(K)$$
- Concept: Relates free energy change to reaction progress; at equilibrium, $$\Delta G = 0$$ and $$Q = K$$.
- Notation:
- $$\Delta G$$ = Gibbs free energy change;
- $$\Delta G^\circ$$ = Standard free energy change