23 Titrations - Acid Base Titrations In a titration, small...

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1 1 Acid – Base Titrations In a titration, small amounts of an acid (or base) with a known concentration are added gradually to a known volume of a base (or acid) in order to determine its concentration. A titration curve plots the pH of the resulting solution (on the y-axis) as a function the amount of acid (or base) added (on the x-axis). At the equivalence point (S), all of the acid added has reacted completely with the base present. So M a V a = M b V b 2 Today’s To Do For the titration of weak base with a strong acid Calculate the pH at various points in the titration. Identify the major species present in the solution at these different points. In Workshop/Recitation Repeat for another weak base (FofC #37) Homework Reading and QRT’s Repeat for strong base – strong acid Repeat for strong base – weak acid
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2 3 Titrate the weak base ephedrine, a decongestant, with a strong acid, HCl Why is ephedrine a base? Functional groups Amine Alcohol Aromatic ring – benzene ring Alkyl chain Behaves like ammonia, NH 3 .
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This note was uploaded on 03/29/2010 for the course CHE 132 taught by Professor Hanson during the Spring '08 term at SUNY Stony Brook.

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23 Titrations - Acid Base Titrations In a titration, small...

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