Below the contents in the Equilibrium Unit of instruction has been organized by your instructor. Before coming to class you are expected to do the Before Class activities. Click on an activity and follow instructions.

Equilibrium

Lecture Date

Learning Objective

Before Class

During Class

After Class

#1

2.1. Characterize chemical reactions in terms of reversibility and relative concentrations of reactants and products.

2.2. Determine equilibrium expressions for homogeneous and heterogeneous chemical reactions from stoichiometry.

View the following video Demonstration
1. Shifting Reactions (FeSCN2+)
2. Shifting Reactions (Chromate/dichromate)
3. Shifting Reactions (Cobalt chloride)

Chemical Equilibrium MoLE

 

Web Text (LO 2.1 and 2.2)

MoLE Review

Problem Tutorial and practice problems

#2

2.3. Determine the stoichiometric relationship between initial and equilibrium concentrations of reactants and products.

2.4. Determine the relationship between Kold and Knew when a chemical reaction is reversed or multiplied by a constant factor of n.

 

MoLE Activity

 

Web Text (LO 2.3 and 2.4)

MoLE Review

Tutorial and practice problems

#3

2.5. Determine the relationship between Kc and Kp for a chemical reaction involving gaseous components.

2.6. Determine value for K from equilibrium concentrations of reactants and products in a chemical reaction.

Do a PLE

Q1 is write the equilibrium expression for a given reaction (tell them the value of K)

Q2. Reverse reaction and ask student to write the equilibrium expression and compare to the equilibrium expression in Q1 and calculate K for the new reaction

Q3. Give a new reaction and its K and ask student to write the equilibrium expression.

Q4. same equation only multiuplied by a whole number ask student to write the equilibrium expression and compare to the equilibrium expression in Q3 and calculate K.

Q5 give two equations and a third equation that is the sum of the first two ask student to write the equilibrium expressions for each equation and explain the relationship

 

Web Text (LO 2.5 and 2.6)

Problem Tutorial and practice problems

#4

2.7. Determine the equilibrium concentrations of reactants and products of a chemical reaction from initial concentrations and value of K.

2.8. Determine if equilibrium has been reached in a chemical reaction; determine the direction the reaction will shift if equilibrium has not been reached.

 

 

Web Text (LO 2.7 and 2.8)

Problem Tutorial and practice problems

#5

 

2.9. Use Le Ch‰telierŐs Principle to predict the direction a reaction at equilibrium will shift as a result of changes in concentration, pressure/volume, and temperature as it approaches a new equilibrium.

 

 

 

Web Text (LO 2.9)

Problem Tutorial and practice problems

 

 

Laboratory Date

Learning Objective

Before Lab

During Lab

After Lab

#1

2.1. Characterize chemical reactions in terms of reversibility and relative concentrations of reactants and products.

2.2. Determine equilibrium expressions for homogeneous and heterogeneous chemical reactions from stoichiometry.

View the following video Demonstration
1. Shifting Reactions (FeSCN2+)

I.4. : Shifting Reactions

 

 

#2

2.6. Determine value for K from equilibrium concentrations of reactants and products in a chemical reaction.

 

I.5. : Iron(III) nitrate and potassium thiocyanate

 

 

#3

2.8. Determine if equilibrium has been reached in a chemical reaction; determine the direction the reaction will shift if equilibrium has not been reached.

2.9. Use Le Ch‰telierŐs Principle to predict the direction a reaction at equilibrium will shift as a result of changes in concentration, pressure/volume, and temperature as it approaches a new equilibrium.

 

Print out the laboratory experiment: Guided-inquiry activity and complete using Chemical Equilibrium MoLE