版权所有：华东理工大学物理化学教研室 9 3) Perfect gas equilibria 9.1 The Gibbs energy minimum When > 0, K< 1: at equilibrium the partial pressure of A exceeds that of B, the reactant A is favoured in the equilibrium. o ΔrG When < 0, K > 1 : at equilibrium the partial pressure of B exceeds that of A, the product B is favoured in the equilibrium. o ΔrG版权所有：华东理工大学物理化学教研室 9 3) Perfect gas equilibria 9.1 The Gibbs energy minimum When > 0, K< 1: at equilibrium the partial pressure of A exceeds that of B, the reactant A is favoured in the equilibrium. o ΔrG When < 0, K > 1 : at equilibrium the partial pressure of B exceeds that of A, the product B is favoured in the equilibrium. o ΔrG