Short Answer Section 1. 10.0 mL of 0.40 M weak acid is being neutralized with 0.10 M NaOH. The results of this titration is shown below. 14 12 10 a. Referring to a chart of indicators and their turning points, which indicator would you use for this titration? Explain. 8 H 6 4 The suitable indicator for the titration. weak and and strong base Nach either thymol blue (pt lange bik 9.6 or phenolphta lein (pH range 8.3-10.0) of the would be 20 30 40 50 60 Volume of NaOH addod (ml) b. Using the symbol "HA" to represent the weak acid, use a dissociation equation to explain why this acid behaves as a weak acid weak acid HA can be depicted as HAcaq) = H (g) + A (am) IS The dissociation of where the equilibrium A lies more to the left dissociation very weak, and unstable. So, equilibrium lies to the left a strong base highly C. In the buffer zone between 20 and 30 mL of titrant added the pH doesn't change very much. How does Le Chatelier's Principle explain this phenomenon? d. Using the pH at the start of the titration, find the K, for this acid. You may find it helpful to set up an ICE table as part of your solution 10 70 80

Short Answer Section 1. 10.0 mL of 0.40 M weak acid is being neutralized with 0.10 M NaOH. The results of this titration is shown below. 14 12 10 a. Referring to a chart of indicators and their turning points, which indicator would you use for this titration? Explain. 8 H 6 4 The suitable indicator for the titration. weak and and strong base Nach either thymol blue (pt lange bik 9.6 or phenolphta lein (pH range 8.3-10.0) of the would be 20 30 40 50 60 Volume of NaOH addod (ml) b. Using the symbol "HA" to represent the weak acid, use a dissociation equation to explain why this acid behaves as a weak acid weak acid HA can be depicted as HAcaq) = H (g) + A (am) IS The dissociation of where the equilibrium A lies more to the left dissociation very weak, and unstable. So, equilibrium lies to the left a strong base highly C. In the buffer zone between 20 and 30 mL of titrant added the pH doesn't change very much. How does Le Chatelier's Principle explain this phenomenon? d. Using the pH at the start of the titration, find the K, for this acid. You may find it helpful to set up an ICE table as part of your solution 10 70 80

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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