Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Concept explainers

Acid Base Titration
An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.
Question

Calculate the pH for each of the cases in the titration of 25.0 mL of 1.50 M pyridine, C5H5N(aq) with 0.500 M HBr(aq) at 25°C. The Kb of pyridine is 1.7×10−9. Report all your answers to 2 decimal places. Record the bold and underlined values to the empty spaces in your handout.

  1. Before the addition of any HBr: Question Blank 1 of 5
  2. After the addition of 10.0 mL of HBr: Question Blank 2 of 5
  3. After the addition of 37.5 mL of HBr: Question Blank 3 of 5
  4. After the addition of 75.0 mL of HBr: Question Blank 4 of 5
  5. After the addition of 85.0 mL of HBr: Question Blank 5 of 5
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Step 1: Determine the pH of the solution after add different volumes of HBr:
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Step 2: 1. Calculation for pH of the solution before add HBr:
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Step 3: 2. Calculation for pH of the solution after add 10.0 mL HBr:
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Step 4: 3. Calculation for pH of the solution after add 37.5 mL HBr:
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Step 5: 4. Calculation for pH of the solution after add 75.0 mL HBr:
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Step 6: 4. Calculation for pH of the solution after add 85.0 mL HBr:
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