Embedded Files
What is Equilibrium?
The embeded video will help lay the foundation on what equilibrium means, as well as, provide graphical and mathematical foundations that support equilibrium has occurred within a chemical reaction.
Manipulating the Equilibrium Constant:
The embedded video below provides you with some of the strategies one can use to manipulate an equilibrium constant to obtain a new equilibrium constant. Focus on the video from 4:10 to the end. Then, practice with the different problems found in your unit packet.
LeChatelier's Priniciple:
The fact that a system at equilibrium will shift to account for a stress placed on it is known as LeChatelier's Principle. A Stress can come as a change in reactant or product amounts, a change in temperature, or a change in Volume/Pressure. The two videos below are a good review of this Principle and how to analyze the direction an equilibrium system will shift to establish a new equilibrium.
LeChatelier Part 1
Le Chatelier Part 2
Reaction Quotient:
The linked activity below will have you investigating the Reaction Quotient. Its primary use in chemistry is to help you determine if a chemical system is at equilibrium or not. By comparing it to the equilibrium constant value, you can also determine if the reaction needs to proceed in the forward or reverse direction to achieve equilibrium. After completing the investigation, you can also read pages 64 and 65 to aid in your understanding.
REACTION QUOTIENT (See the Packet Key Above)
Common Ion Effect:
Here's a riddle... What can we do to a saturated solution that will affect the solubility of the salt? One answer... mess with the quantity of ions that are present in solution. This is the basis of the common ion effect. To help you better visualize this concept and work its problems, view the two videos embedded below.
Common Ion Effect
Le Chatelier's Connection to the Common Ion Effect
More Optional Practice for Unit 3
Below is the link for some more practice to help prepare you for the second half of the unit test. Use the linked key to check your work.
Resource: More Optional Practice Wrksht (KEY)
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