Le Chatelier's principle is applicable only to a

Which of the following can be explained by Le Chatelier's principle?

In the equilibrium $2A_{(g)} + 3B_{(g)} \rightleftharpoons 3C_{(g)} + 2D_{(g)}$,an increase in pressure will:

In the equilibrium $Ice \rightleftharpoons Water$,what happens when pressure is increased?

In which of the following reactions will a change in pressure not affect the rate of reaction?

Sodium sulphate dissolves in water with the evolution of heat. Consider a saturated solution of sodium sulphate. If the temperature is raised,then according to Le Chatelier's principle: