2023-2024 Equilibrium Group Project

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1) Write the reversible reaction (even if it is not a chemical system).

2) Draw a picture of the equilibrium condition for this system including what you think the value K (Equilibrium constant) by noting ratio of reactant to product you draw.

3) Explain one way to stress this system out and explain waht LeChatelier's Principle says including drawing a "new Equilibrium bucket" along with "original Equilibrium bucket".

You will be using the 4 sides of a Manilla folder.

Side 1 (General Information)
1) Name of people in the Group
2) Period

3) Answer the following questions:
a) What is the phase Mr. McLeod makes you memorize to remember what is in "bucket" when equilibrium is established.

b) What is the definition of Equilibrium?
c) What common misunderstanding that most people have about the condition in an Equilibrium "bucket"? Explain.
d) General Definition of Equilibrium constant (K)?
e) Explain what is in the "bucket" at Equilibrium if either i) very large values of K or ii) very small value of K.
f) Explain what Dynamic Equilibrium means in terms of macroscopic (whole system view) observation vs. microscopic observation (individual particle view).
g) Explain why you can "arrow out as 1" of solids and liquids but you can't do that for aqueous (aq) or gas phases.

Side 2 (Equilibrium Constant Expression and solving for K)
Using one of Equilibrium Problems that you completed in either i) Problems for Simple Equilibrium Constant Calculations or Problems on Equilibrium - Revised 2009. Be sure to include:
a) Balanced chemical reaction including phases of each reactant and products.
b) Equilibrium Constant Expression (first including all species), then "arrow out as 1" appropriate phase species.
c) Rewrite Equilibrium Constant Expression just with species that have appropriate phases.
d) Write out the equilibrium concentration (in M) for each species (as a group what is this called).
e) Plug values and units ([ ] are now ( ) ) into Expression and solve for K (including units).
f) Knowing the value of K, explain what you expect to see in the "bucket" when Equilibrium is established.

Side 3 (LeChatlier's Principle)

We will use the chemical reaction (called the Haber process, 1st process to fix nitrogen to ammonia industrially) that are in your Equilibrium Notes 3 to show LeChatelier's Principle.

1 N_{2 (g)} + 3 H_{2 (g)} <==> 2 NH_{3 (g)} + Energy (i.e. exothermic rxn)

You will use the following template to answer your LeChatlelier's Principle example.
You may choose any Stress you want expect the following, i) Add catalyst, ii) Add products, iii)Decreasing temperature, and iv) Decreasing pressure. You should follow work shown in Equilibrium Notes 3.
Stress: _______________________________________________________________

How rxn tries to remove stress: _________________________________________________

Circle: Make more product or more reactant (fill in for pressure changes)__________________

Circle: Favoring: Forward rxn or Backward rxn: (fill in for temperature changes) _____________

Circle: Shift Equilibrium to: Left(more reactant) or Right (more product)

Side 4 (Find an "real life" application of Equilibrium, chemistry related or not)

1) Write the reversible reaction (even if it is not a chemical system).
2) Draw a picture of the equilibrium condition for this system including what you think the value K (Equilibrium constant) by noting ratio of reactant to product you draw.
3) Explain one way to stress this system out and explain waht LeChatelier's Principle says including drawing a "new Equilibrium bucket" along with "original Equilibrium bucket".