Transcription of Chapter 8, Acid-base equilibria - bu.edu
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Chapter 8, Acid-base equilibria - bu.edu
Chapter 8, Acid-base equilibriaRoad map of Acid-base equilibriaOn first encounter, the study of Acid-base equilibria is a little like a strange land with seemingly confusing trails that make passage difficult. In fact, there is a road map that, once understood, allows us to navigate Acid-base equilibria with confident precision and so become masters of its domain. Here is an overview of this road , aqueous Acid-base equilibria are just a particular example of the ideas and techniques we have already learned in the study of gas phase chemical equilibria . However, there are two aspects that complicate the application of these ideas. First, because the autoionization of water,2H2 OHlLFH3 O+ HaqL+OH- HaqL,Kw,is always present in aqueous solution, the analysis of aqueous Acid-base equilibria must always take into account at least two competing equilibria , the acid or base ionization and the water autoionization.
reaction of the acid and base as a limiting reagent problem, but then equilibration of the products is ... this road map of acid-base equilibria when you approach such an equilibrium as a two step process: First (always!), determine which regime applies. Then, ... (orders of magnitude), and so it is convenient to measure [H3O
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