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Changing pressure on an equilibrium system will shift the equilibrium position in the direction that counteracts the change. For example, if the pressure on a gas-liquid equilibrium system is increased, the equilibrium will shift towards the liquid phase because the increased pressure favors the formation of the condensed phase. Similarly, if the pressure on a solid-gas equilibrium system is decreased, the equilibrium will shift towards the gas phase because the decreased pressure favors the formation of the less condensed phase.