chemprocedure10

Chemprocedure10 - Karlo Natonton Chemistry 153-45 TA Jessica Experiment 10 Part A Measuring the pH of Common Acids and Bases 1 Place 25mL of the

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Karlo Natonton Chemistry 153-45 TA: Jessica Experiment 10 November 20, 2009 Part A: Measuring the pH of Common Acids and Bases 1. Place 25mL of the solutions into separate beakers. 2. Using a pH meter, measure the pH of the solutions. 3. Before moving the electrode to another solution, rinse the electrode. 4. Record the pH of each solution. a. 0.1 M HCl b. 0.1 M H 3 BO 3 c. 0.1 M NH 3(aq) d. 0.1 M NaOH 5. Using pH paper, measure the pH of the same solutions and record the values. 6. Determine the approximate hydronium ion molarity of each solution using the measured pH values and the pH scale on page 173. 7. pH of 4.0 indicates a hydronium ion concentration of 1 X 10 -4 M. pH of 5.0 indicates concentration of 1 X 10 -5 M. pH of 4.6 indicates between 1 X 10 -4 and 1 X 10 -5 M. Part B: Measuring the pH of Salt Solutions 1. Place 25mL of the solutions into separate beakers. 2. Using a pH meter, measure the pH of the solutions and record the pH. a.
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This note was uploaded on 04/18/2011 for the course CHEM 153 taught by Professor Durham during the Fall '10 term at Saint Louis.

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Chemprocedure10 - Karlo Natonton Chemistry 153-45 TA Jessica Experiment 10 Part A Measuring the pH of Common Acids and Bases 1 Place 25mL of the

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