A(g) + B(g) ↔ AB(l).
In this reaction, gases A and B combine to form a liquid, AB. Suppose that this is an endothermic reaction. We want to maximize production of AB, but Gas A is expensive and we do not want to add any more than we must.

Describe three ways that we could shift the equilibrium position of this reaction toward the AB side without adding any more of Gas A.