Editing 2021-2022 Overview Of Equilibrium

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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 ____________________

*? Then why are irreversible not reversible?

*Big condition needed for a reaction to be reversible: Closed system - 
----- 
Equilibrium 
Your definition: 
 
 
Definition of Equilibrium: 
 
 
*Big Take Aways for Equilibrium: 
**Rate of forward reaction = Rate of backward reaction 
**Time independent, [ ] of each species are constant (but don't have to be same). 
**Units are [ ] (called______) or Pi (called Partial pressure) 
 
*? What happens if you disturb Equilibrium? 
 
<nowiki>LeChatelier's Principle</nowiki> says: 
 If a stress is applied to an equilibrium system, the system will "try to remove the stress to get back to the original system/conditions. 
 
 
*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. 
*<nowiki>LeChatelier's Principle</nowiki> 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

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