What effect will increasing the volume of the reaction

Question

What effect will increasing the volume of the reaction mixture have on the system? What is the change in entropy?

Consider the following reaction at equilibrium:

CuS _(s) + O_{2 (g)} ? Cu _(s) + SO_{2 (g)}

What effect will removing H₂O have on the system? What is the change in entropy?

Consider the following reaction at equilibrium:

2H₂S _(g) + 3O_{2 (g)}? 2H₂O _(g) + 2SO_{2 (g)}