Experiment 30 Titration of Acid and Bases

Experiment 30 - Slowly add NaOH while swirling the flas HCl must be added with the swirling to return to pale pink color Crefully read and record

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Nick Suraci Professor Kramer Section 20L Experiment 30 | Titration of Acids and Bases Purpose: o Examine concentrations-volume relationships o Prepare and standardize a standard base solution o Use the standard base to determine the concentration of an acetic acid solution Procedure Part A: Obtain two burets and was Add 10 mL of NaOH to 290 mL distilled water in a 600 mL beaker and stir Obtain 75 mL of HCl and record molarity Rinse the buret with HCl Stir the NaOH amd record initial volumes Prepare the analyte solution in a 250 mL flask by adding distilled water, 15 mL of the standard HCl and 5 drops of phenopthalein
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Unformatted text preview: Slowly add NaOH while swirling the flas HCl must be added with the swirling to return to pale pink color Crefully read and record volume of the buret on the data sheet Repeat titration two or more times Part B: • Obtain 75 mL of an unknown acetic acid sample • Prepare the acetic acid analyte solution in in a 250ml flask by adding 25 mL of distilled water, 15 mL of unknown, and 5 drops of phenolphthalein • Titrate the solution as described in part A • Jot down volumes • Repaeat titration until three consistent acetic acid concentrations are obtained...
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This note was uploaded on 03/15/2009 for the course CHEM 331 taught by Professor Kramer during the Spring '08 term at University of Delaware.

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