review session 3

review session 3 - Turn on Camtasia Recording! The third...

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Unformatted text preview: Turn on Camtasia Recording! The third exam will be Wednesday, April 16th,2008 in Marcus 131 at 7 pm. It will cover chapters 17 Marc s pm ill co er 1718. To prepare: study notes, read chapts 17:1-9 and 18.1-4, and make sure you can do OWL problems without the help. You Y can repeat OWLs without loosing credit. t OWL ith t l i dit ... 1 With regard to preparation for this exam, do you think you are: A. More prepared than for the previous two B. Equally prepared as for the previous two C. Less prepared than for the previous two D. D Confident E. Nervous ... 2 Exam Content 27 Questions + 3 Extra Credit 3 questions from each lecture, the lecture assigned reading for that lecture or OWLs for that lecture Double sided Concept questions: 13 Quantitative questions: 14 ... 3 Know how to use the formulas on the equation p g q page Hyperlink to Equations page ... 4 Chapt 17 concepts to know: Definition of an acid Bronsted-Lowry acid/bases L i A id/b Lewis Acid/base BE ABLE TO IDENTIFY B-L and Lewis Acids/Bases Know behavior of strong acids/bases in contrast to weak acids and bases Recognize acid/conjugate base pairs and base/conjugate acid pairs Know the relationship between strength of an acid and its conjugate base Calculate pH, pOH, Kw, [H3O+], use all relevant equations on equations page ... 5 Concepts to know: Know that a reaction always goes from the stronger acid/base to weaker. Know how to write Ka and Kb expressions Know the mathematical relationship between Ka and Kb Kw= Ka x Kb Recognize spectator ions (Table 17.4, pg 811), acids, bases and strengths. ... 6 Concepts to know: Be able to use table 17.3 on pg 808. Be able to predict which reactant or product controls the pH of the solution. Table 17.5 on pg 817 Calculate pH of a solution knowing concentration and Ka or Kb Solve for equilibrium hydronium concentration ... 7 Chapt 18 concepts to know: What happens when you add strong acid or base to a solution of weak acid or base. Recognize pairs of weak acids and conjugate bases that would make a good buffer. Predict the pH of its buffering effectiveness bases on Ka, Kb, pKa or pKb. Know the properties of buffers. Be able to use Henderson Hasselbach and non-log version to predict how to make a buffer. ... 8 Chapt 18 concepts to know: Make sure you can do all the OWL homework problems Especially 18.2f and 18.2k Know how to do calculations for making a buffer of a specific pH by direct addition of a solid or by adding strong acid or base. Recognize that you can convert the acid to it's conjugate base or that you can simply add the right amount of the conjugate acid/base. Understand what you are doing in a titration Recognize titration curves. ... 9 halfhalf-way point equivalence point p pH of solution of a weak acid ... 10 Ksp is: An equilibrium constant that describes just exactly how insoluble an "insoluble salt" is. Be bl to l l t Ksp from B able t calculate K f concentrations in solution or concentration present based on Ksp Remember that it is based on the stoichiometry. Read book, study notes, do OWLs and then RELAX! You worked hard and you know this stuff! ... 11 ... 12 ... 13 ...
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