Module 4 Overview & Instructions
Foreword
Obviously, your focus this week will be on Midterm Exam 1, and while this week's material will not be on that exam, it's just as important to keep up with it. Due dates for this week's material are only on Sunday, June 11, but don't put all of it off until then.
Questions and Answers
Whatever you're struggling with this week, somebody else in our section probably is struggling with it, too. Post your question on the Module 4 Q&A Board.
If you know the answer to someone's question, post it. It's almost a certainty that more people in our section than just the person who posted the question want to know the answer.
Learning Outcomes/Objectives
By the conclusion of this learning module, you should be able to:
- understand the collision model for the rates of chemical reactions.
- use the Arrhenius equation, especially the two-point forms, to relate rate constants, activation energy, and temperature.
- understand the idea of a transition state or activated complex.
- interpret energy diagrams with respect to activation energy and change in enthalpy.
- understand the means by which catalysts increase reaction rates.
- understand reaction mechanisms as possible explanations for how reactions work on a molecular level.
- write the rate law for an elementary step of a mechanism.
- identify the rate-determining step in a reaction mechanism.
- choose a plausible mechanism based on an experimentally determined rate law.
- write equilibrium expressions for chemical reactions in terms of concentration and/or pressure.
- estimate the equilibrium position of a reaction based on the magnitude of the equilibrium constant.
- manipulate chemical reactions and their equilibrium constants.
- calculate the equilibrium constant for a reaction by combining reactions and their equilibrium constants.
Stuff to Read, Watch, Think About, and Study
Before you watch the videos below, download the Module 4 Slides Download Module 4 Slides, and use them to take notes as you follow along.
read: Collision Theory Links to an external site.
watch: Rate Constants and Activation Energy; due by June 11 at 23:59 MDT
practice: zero-stakes practice problems -- rate constants and catalysis study problems Download rate constants and catalysis study problems; rate constants and catalysis study problems key Download rate constants and catalysis study problems key
do: WebAssign HW -- Rate Constants; due by June 11 at 23:59 MDT
read: Catalysis Links to an external site.
watch: Catalysis; due by June 11 at 23:59 MDT
read: Reaction Mechanisms Links to an external site.
watch: Reaction Mechanisms; due by June 11 at 23:59 MDT
practice: zero-stakes practice problems -- mechanisms study problems Download mechanisms study problems; mechanisms study problems key Download mechanisms study problems key
do: WebAssign HW -- Reaction Mechanisms and Catalysis; due by June 11 at 23:59 MDT
do: WebAssign timed (75 min) quiz -- Chemical Kinetics; due by June 11 at 23:59 MDT
read: Chemical Equilibria Links to an external site.; Equilibrium Constants Links to an external site.
watch: Reaction Reversibility; due by June 11 at 23:59 MDT
watch: Manipulating Equilibrium Reactions and Constants; due by June 11 at 23:59 MDT
practice: zero-stakes study problems -- Equilibrium Expressions and Constants Study Problems Download Equilibrium Expressions and Constants Study Problems; Equilibrium Expressions and Constants Study Problems key Download Equilibrium Expressions and Constants Study Problems key
do: WebAssign HW -- Equilibrium Expressions; due by June 11 at 23:59 MDT