Acid-dissociation constants of two acids are listed in the table above. A 20. r acid is titrated to the equivalence point with 20. mL of 0.10 M NaOH. Which about the pH of the solutions at the equivalence point? (A) Solution 1 has a higher pH at the equivalence point because CH3CO2 (B) Solution 1 has a higher pH at the equivalence point because CH3CO2 (C) Solution 1 has a lower pH at the equivalence point because CH3CO2 (D) Solution 1 has a lower pH at the equivalence point because CH3CO2

Acid-dissociation constants of two acids are listed in the table above. A 20. r acid is titrated to the equivalence point with 20. mL of 0.10 M NaOH. Which about the pH of the solutions at the equivalence point? (A) Solution 1 has a higher pH at the equivalence point because CH3CO2 (B) Solution 1 has a higher pH at the equivalence point because CH3CO2 (C) Solution 1 has a lower pH at the equivalence point because CH3CO2 (D) Solution 1 has a lower pH at the equivalence point because CH3CO2

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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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

7.
Solution
1
2
Acid
CH3CO₂H
CF3CO₂H
Ka
1.75 × 10-5
1.0 × 10⁰
Acid-dissociation constants of two acids are listed in the table above. A 20. mL sample of a 0.10 M solution of each
acid is titrated to the equivalence point with 20. mL of 0.10 M NaOH. Which of the following is a true statement
about the pH of the solutions at the equivalence point?
(A) Solution 1 has a higher pH at the equivalence point because CH3CO₂H is the stronger acid.
(B) Solution 1 has a higher pH at the equivalence point because CH3CO₂H has the stronger conjugate base.
(C) Solution 1 has a lower pH at the equivalence point because CH3CO₂H is the stronger acid.
(D) Solution 1 has a lower pH at the equivalence point because CH3CO₂H has the stronger conjugate base.

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