Choose the INCORRECT statement.
◦ The third law of thermodynamics states that the entropy of a pure crystal at 298 K is zero.
◦ ΔrS° = Σ (ν S°) products - Σ (ν S°) reactants.
◦ The activity of pure liquids or pure solids is 1.
◦ ΔrG° = -RT ln Keq.
◦ ΔrG° = ΔrH° - TΔrS°.