Editing revision 21 of 2021-2022 Overview Of Equilibrium
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Here is an Overview of Equilibrium and Key Take Aways to remember:<br> <br> Kinetic Molecular Theory says:<p hidden> All substances are made up of particles that are in constant motion and sometimes collide/interact.<br> <br> *When particles have Effective collisions (EC), particles (reactants) rearrange into new groupings (products) and we say there is a chemical reaction (rxn).<br> Question: THEN WHAT?<br> *Two possibilities:<br> **Irreversible rxn :<br> **Reversible rxn:<br> ***Forward reaction:<br> ***Backward or reverse reaction:<br> <b>Virtually All Chemical Reactions are ____________________</b> <br> *? <p hidden> Then why are irreversible not reversible?</p><br> *Big condition needed for a reaction to be reversible: Closed system - <br> -----<br> <b><u>Equilibrium</u></b><br> Your definition: <br> <br> <br> Definition of Equilibrium:<br> <br> <br> *Big Take Aways for Equilibrium: <br> **<p hidden>Rate of forward reaction = Rate of backward reaction </p> **Time independent, [ ] of each species are constant (but don't have to be <p hidden>same</p>).<br> **Units are [ ] (called______) or P<sub>i</sub> (called Partial pressure)<br> <br> *? What happens if you disturb Equilibrium?<br> <br> <nowiki>LeChatelier's Principle</nowiki> says:<br> <p hidden> 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.<br> <br> <br> *Big Take Away: Can't get there (changed system), so create new one<br> *Big Take Away: <p hidden> 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:<br> **<p hidden>Equilibrium shifts to Left - More reactant in new equilibrium compared to original equilibrium</p><br> **<p hidden>Equilibrium shifts to Right - More products in new equilibrium compared to original equilibrium</p><br> **<p hidden>Not affect equilibrium</p>
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