EXPERIMENT 7: PRE-LABORATORY Determination of the Dissociation Constant K, of a Weak Acid Pre-Laboratory Review Questions and Exercises DUE BEFORE LAB BEGINS. ANSWER IN THE SPACE PROVIDED. . The following data was collected when a 25.0 ml sample of an unknown acid was titrated witha 1.00 M NaOH solution. pH Data 14 12 0 10 I5 20 25 30 35 mL of base added Volume NaOH pH Volume NaOH pH 2.39 3.08 3.47 3.80 4.40 5.18 5.49 8.25 10.3 11.6 11.8 12.0 12.1 12.2 26 12.5 20 24 24.5 24.9 30 32 34 12.26 Determine K, for the unknown acid. 2. What is the pH of the solution that results when 25.0 mL of o0.125 M NaOH is added to 25.0 ml of 0.250 M HCI? 3. What is the pH of a solution that is 0.40 M in sodium acetate and 0.60 M on acetic acid? (K, for acetic acid is 1.85 x 10-5.)

EXPERIMENT 7: PRE-LABORATORY Determination of the Dissociation Constant K, of a Weak Acid Pre-Laboratory Review Questions and Exercises DUE BEFORE LAB BEGINS. ANSWER IN THE SPACE PROVIDED. . The following data was collected when a 25.0 ml sample of an unknown acid was titrated witha 1.00 M NaOH solution. pH Data 14 12 0 10 I5 20 25 30 35 mL of base added Volume NaOH pH Volume NaOH pH 2.39 3.08 3.47 3.80 4.40 5.18 5.49 8.25 10.3 11.6 11.8 12.0 12.1 12.2 26 12.5 20 24 24.5 24.9 30 32 34 12.26 Determine K, for the unknown acid. 2. What is the pH of the solution that results when 25.0 mL of o0.125 M NaOH is added to 25.0 ml of 0.250 M HCI? 3. What is the pH of a solution that is 0.40 M in sodium acetate and 0.60 M on acetic acid? (K, for acetic acid is 1.85 x 10-5.)

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter5: Equilibrium, Activity And Solving Equations

Section: Chapter Questions

Problem 3P

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