1. 11.7 – NOTES Equilibrium

3. A. Definition - rate of the forward reaction equals the rate of the reverse reaction
- a.k.a. dynamic equilibrium

4. B. LeChatlier’s Principle
1. Definition - when stress is put on a system, the system will move to relieve that stress;

5. 2. Concentration - a change in concentration is a stress
- if a species is increased, the system will move in the opposite direction to consume the added species
- if a species is decreased, the equilibrium will shift in the direction of the substance removed to “make more”
increase Reactants ( = decrease Products) will shift 
increase Products ( = decrease in Reactants) will shift 

8. 3. Temperature - most reactions are endothermic or exothermic
- heat can be thought of as a reactant or product and follows same rules as concentration
4. Volume – AP Chem