CHEM 140 Chapter Notes - Chapter 9: Zwitterion, Equilibrium Constant, Analyte
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25 Apr 2019
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For most diprotic acids, k 1 is sufficiently larger than k 2. A solution of diprotic acid behaves like a solution of a monoprotic acid w/ k a = Fully basic form of a diprotic acid can be treated as monobasic w/ k b = k b1. Amphiprotic - molecule that can both donate and accept a proton. [h + ] + [h 2 l + ] = [l - ] + [oh - ] or. Intermediate form of diprotic acid: [h + ] = Derived by using systematic treatment of equilibrium. [h 2 l + ] - [l - ] + [h + ] - [oh - ] = 0. Polyprotic acids/bases - those that can donate or accept more than one proton. Zwitterion - a molecule w/ both positive and negative charges. Treat h 2 a as a monoprotic acid w/ k a = k 1 to find [h + ], [ha - ], and [h 2 a]
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