review2s08v1 - Dr McCord CH302 OVERVIEW for EXAM 2 Spring...

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Textbook Chapters for Exam 2 Chapters 6 and 7. You’re responsible for any material covered in class whether it was on the homework or not. This review sheet covers most everything we have done. Also remember that no equations are given on the exams. Values for equilibrium constants are given where needed although you should know K w . Chemical Equilibrium • Know how to WRITE the mass action expression — same as equilibrium equation How does this expression change and the value of K when a reaction is "flipped", doubled, halved? When is this expression equal to Q ? When is it equal to K ? • What is thermodynamic K ? How does that relate to K p and K c ? • How does K p relate to K c ? When would they be equal? • What is the relationship between ± G rxn and Q ? between ± G 0 rxn and K ? • What are the units for an equilibrium constant? There are NO units. Why? • Calculations involving the equilibrium constant, K • Know how to calculate the equilibrium constant if given equi- librium amounts of reactants and products. This is where you are given the entire bottom row (final equilibrium concentra- tions) of the equilibrium table (ICE Table) that we use. • Know how to calculate the equilibrium constant if given ini- tial concentrations and ONE f nal concentration at equilib- rium. This is where you are given only ONE of the bottom row concentrations of your equilibrium table. • Know how to calculate f nal (equilibrium) concentrations if given initial concentrations and the value of K c . This is the typical type problem where you must set up and solve the equilibrium expression for x . Your entire bottom row will be lots of concentration formulas containing x . • Know how to predict the direction of a reaction if given con-
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review2s08v1 - Dr McCord CH302 OVERVIEW for EXAM 2 Spring...

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