z The Gibbs Free Energy v1A + v2B ↔ v3C + v4D ΔrG0 = ∑viΔfG0(products) - ∑viΔfG0(reactants) dG = dH – TdS or ΔG = - RT ln Keq The fundamental equations of thermodynamics i) If ΔG0 < 0 (exergonic, from the Greek word for work-producing) the forward reaction is spontaneous. (ii) If ΔG0 > 0 (endergonic, signifying work-consuming) the reverse reaction is spontaneous. (iii) If ΔG0 = 0 the reaction is at equilibrium.z The Gibbs Free Energy v1A + v2B ↔ v3C + v4D ΔrG0 = ∑viΔfG0(products) - ∑viΔfG0(reactants) dG = dH – TdS or ΔG = - RT ln Keq The fundamental equations of thermodynamics i) If ΔG0 < 0 (exergonic, from the Greek word for work-producing) the forward reaction is spontaneous. (ii) If ΔG0 > 0 (endergonic, signifying work-consuming) the reverse reaction is spontaneous. (iii) If ΔG0 = 0 the reaction is at equilibrium