CHEM 1&2 Lab Manual & worksheets pg 162

CHEM 1&2 Lab Manual & worksheets pg 162 -...

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Experiment 15: Titration of Vinegar General Chemistry I and II Lab Manual Dakota State University page 162 of 232 Experiment 15: Titration of Vinegar Purpose: To determine the concentration of acetic acid in vinegar Purrrr-fect: Something Cat-woman used to say just before doing something villainous Background: See “Using the Pasco System” and “Basic Laboratory Procedures”; pipettes, burets, balance Introduction: Commercial vinegar is typically about 5% acetic acid (CH 3 COOH). This is a classic titration in which we will determine the exact concentration of acetic acid in store- bought vinegar. Procedure: You will want to set up the Pasco system for manual data collection using the pH probe. You will want to have it plot pH as a function of volume of base added. Set up a buret (see general procedures) for a titration. Standardization of the Base: Follow this procedure IF the base solution provided has not already been standardized. If the base has been standardized for you, write down the exact
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This note was uploaded on 01/27/2012 for the course CHM 2045 taught by Professor Josephwalter during the Fall '11 term at Dakota State.

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