titrations - Acids and Bases - Titrations A . T itr a tio n...

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Acids and Bases - Titrations A. Titrations 1. step-wise addition of a standardized acid or base with a given volume of base or acid. 2. progress monitored a. indicators - e.g. phenolphthalein b. pH electrodes/meter Acids and Bases - Titrations 3. Terminology a - equivalence point - the point at which equal moles of acid and base are present. (only a salt remains) b. endpoint - the point at which an indicator changes color. Acids and Bases - Titrations B. Cases in point 1. Titrate 0.100 M HCl with 100.0 mL of 0.200 M NaOH 2. Four major areas of interest: a. initial pH b. pH after SOME base is added c. pH at the equivalence point d. pH past the equivalence point 3. Calculations: a. What’s present ??? Impt.Question b. What will react with added reagents? c. What’s left after the reaction ? Acids and Bases - Titrations Acids and Bases - Titrations ! A Titration of a strong acid with a strong base (HCl with NaOH). ! A Titration of a weak acid with a strong base(CH 3 CO 2 H withNaOH). 80
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This note was uploaded on 12/25/2009 for the course CH CH 201 taught by Professor Banks during the Spring '09 term at N.C. State.

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titrations - Acids and Bases - Titrations A . T itr a tio n...

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