1. Le Chatliers Principle

2. Subliminal message! Chemistry is great! Chemistry is great!

3. Le Chatliers Principle When an equilibrium is disrupted, the reaction will shift to restore equilibrium.

4. Subliminal message! Chemistry is great! Chemistry is great!

5. Le Chatliers Principle The equilibrium can be affected by: - adding substances – the reaction will shift away from the change. - removing substances – the reaction will shift toward the change.

6. Subliminal message! Chemistry is great! Chemistry is great!

7. Le Chatliers Principle - temperature – acts like a reactant/product - container size – smaller container will shift toward small number of molecules - Adding inert gasses – no effect

8. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 1) If pressure of A is increased

9. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 1) If pressure of A is increased Reaction will shift right

10. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 2) The temperature of the reaction is increased

11. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 2) The temperature of the reaction is increased Reaction will shift left

12. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 3) A catalyst is added to the system

13. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 3) A catalyst is added to the system No change in the equilibrium

14. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 4) More compound B is steadily added to the reaction chamber

15. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 4) More compound B is steadily added to the reaction chamber The reaction will shift right

16. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 5) An inhibitor is added

17. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 5) An inhibitor is added No shift in equilibrium

18. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 6) Argon gas is added to the reaction chamber

19. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 6) Argon gas is added to the reaction chamber No shift in equilibrium

20. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 7) The container is made smaller

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22. Le Chatliers Principle For example: Consider the reaction A + B C H = -453 kJ/mol 7) The container is made smaller the reaction will shift right