2021-2022 Overview Of Equilibrium

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*Big Take Away:

*Big Take Away: System can only make forward rxn go more or backward go more to remove stress to make new equilibrium.

Changed: 40,42c40,42

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**Equilibrium shifts to Left - More reactant in new equilibrium compared to original equilibrium

**Equilibrium shifts to Right - More products in new equilibrium compared to original equilibrium

**Not affect equilibrium

Here is an Overview of Equilibrium and Key Take Aways to remember:

Kinetic Molecular Theory says: All substances are made up of particles that are in constant motion and sometimes collide/interact.

When particles have Effective collisions (EC), particles (reactants) rearrange into new groupings (products) and we say there is a chemical reaction (rxn).

Question: THEN WHAT?

Two possibilities:
- Irreversible rxn :
- Reversible rxn:
  - Forward reaction:
  - Backward or reverse reaction:

Virtually All Chemical Reactions are ____________________

Big condition needed for a reaction to be reversible: Closed system -

Equilibrium
Your definition:

Definition of Equilibrium:

Big Take Aways for Equilibrium:
- Time independent, [ ] of each species are constant (but don't have to be ).
- Units are [ ] (called______) or P_i (called Partial pressure)

? What happens if you disturb Equilibrium?

LeChatelier's Principle says:

Big Take Away: Can't get there (changed system), so create new one
Big Take Away: System can only make forward rxn go more or backward go more to remove stress to make new equilibrium.
LeChatelier's Principle would say stress would:
- Equilibrium shifts to Left - More reactant in new equilibrium compared to original equilibrium
- Equilibrium shifts to Right - More products in new equilibrium compared to original equilibrium
- Not affect equilibrium