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Changing Conditions

La Chatellier's Principle

  • Position of equilibrium will move to oppose any change in conditions

Change in Conditions

Temperature increases

Position of equilibrium

  • Moves in direction of the endothermic reaction

Time taken to reach equilibrium

  • Decreases

Pressure increased in a reaction involving gases

Position of equilibrium

  • Moves to the side of the balanced equation with fewer molecules of reacting gas

Time taken to reach equilibrium

  • Decreases

Concentration of a reacting substance increased

Position of equilibrium

  • Moves away from the reacting substance in the balanced equation

Time taken to reach equilibrium

  • Decreases

Catalyst added

Position of equilibrium

  • No change

Time taken to reach equilibrium

  • Decreases