### Titration Curve Analysis**5. Use the titration curve to the right to answer the following questions:****A. What is the pH at the equivalence point?**The equivalence point on the titration curve represents the moment when the amount of titrant (base) added is stoichiometrically equivalent to the amount of substance being titrated (acid). To find the pH value at this point, locate where the curve sharply rises and levels off. **B. Is the unknown acid or base? Weak or strong? How can you tell?**To determine whether the unknown solution is an acid or a base and whether it is weak or strong, examine the initial pH before any base is added and the shape of the titration curve. **C. What is the Ka of this unknown solution?**The Ka (acid dissociation constant) of the unknown solution can be determined from the pH at the half-equivalence point, where half of the acid has been neutralized. At this point, the pH equals the pKa of the acid.### Titration Curve Diagram**Explanation:**The diagram displays a titration curve indicating the change in pH as a base (titrant) is gradually added to an unknown solution. The x-axis is labeled "Amount of Base added (mL)" ranging from 0 to 60 mL, while the y-axis shows the pH scale ranging from 0 to 13.**Key Observations:**- Initial pH near 2 indicates the unknown solution is an acidic solution.- Sharp rise in pH around 30 mL of base added signifies the equivalence point.- After the equivalence point, the pH stabilizes around 11-12, suggesting the complete neutralization of the acidic solution.**Conclusion:**The titration curve provides critical information to analyze the properties of the unknown solution, including its pH at equivalence, whether it is a weak or strong acid, and its acid dissociation constant (Ka).This content is designed to help students understand how to interpret titration curves in chemistry.

Answered: Image /qna-images/answer/b2f39fa2-e0e7-4ccd-80b4-1f2467ddca6f.jpg

5. Use the titration curve to the right to answer the following questions A. What is the pH at the equivalence point? B. Is the unknown acid or base? Weak or strong? How can you tell? C. What is the Ka of this unknown solution? Titration Curve 13 12 11 10 9 8 pH 7 6 5 4 3 2 1 0 0 5 10 15 20 25 30 35 40 45 50 55 60 Amount of Base added (mL)

5. Use the titration curve to the right to answer the following questions A. What is the pH at the equivalence point? B. Is the unknown acid or base? Weak or strong? How can you tell? C. What is the Ka of this unknown solution? Titration Curve 13 12 11 10 9 8 pH 7 6 5 4 3 2 1 0 0 5 10 15 20 25 30 35 40 45 50 55 60 Amount of Base added (mL)

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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