Lab6 - Uyen Nguyen Analysis of Commercial Antacids March...

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Uyen Nguyen Analysis of Commercial Antacids March 18, 2008 Chem 002, Section 005
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Introduction: In this laboratory experiment, students were given a specific antacid and asked to titrate it until the antacid’s pH reached a neutral level of seven. The purpose of this lab was to observe and understand the acid neutralizing properties of several different commercial antacids. This lab was very important because it also helped students learn how to perform acid-base titration using the pH meter. Experimental Procedure: Materials: One brand of antacid (Rolaids Extra Strength) Analytical balance Weighing paper Volumetric pipet 25 mL of 0.15 HCl Erlenmeyer Flask Hot plate Distilled water pH meter Buret 0.15 M NaOH Procedure: 1. Take your assigned brand of antacid table and measure the whole tablet using the analytical balance. 2. Then cut your tablet in 8 equal pieces and select three of them to experiment with. 3. Weigh three of these pieces separately on weighing paper and record their masses. Then fold the weighing paper over and gently crush these three pieces. 4. Use a volumetric pipet to dispense 25 mL of 0.15 M HCl into a clean 125 mL Erlenmeyer flask. 5. Add one of your crushed tablets to the flask and use about 20 mL of distilled water to wash all of the pieces of the tablet into the flask. 6. Put the flask on a hot plate and boil it for 2 minutes. 7.
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This note was uploaded on 02/27/2010 for the course CHEM 1132 taught by Professor Cole/clark during the Spring '08 term at UCM.

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Lab6 - Uyen Nguyen Analysis of Commercial Antacids March...

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