To a 500 mL of buffer solution consisting of 0.25 M Acetic acid (HAc) and 0.50M Sodium acetate (NaAc); 0.05 mol of NaOH is added. (KHAC= 1.8x10^-5) Accordingly, which of the following statements is true? I: the pH of the solution rises, there is an increase in pH by 0.12 units. II. the pH of the solution drops, there is a decrease in pH of 0.12 units. II. The pH of the initial buffer is 4.74 IV. In the last case, the pH of the buffer is pH= 5.17. V. There is no significant change in pH.

To a 500 mL of buffer solution consisting of 0.25 M Acetic acid (HAc) and 0.50M Sodium acetate (NaAc); 0.05 mol of NaOH is added. (KHAC= 1.8x10^-5) Accordingly, which of the following statements is true? I: the pH of the solution rises, there is an increase in pH by 0.12 units. II. the pH of the solution drops, there is a decrease in pH of 0.12 units. II. The pH of the initial buffer is 4.74 IV. In the last case, the pH of the buffer is pH= 5.17. V. There is no significant change in pH.

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

To a 500 mL of buffer solution consisting of 0.25 M Acetic acid (HAC) and 0.50M Sodium acetate (NaAc); 0.05 mol of NaOH
is added. (KHAC= 1.8x10^-5)
Accordingly, which of the following statements is true?
I: the pH of the solution rises, there is an increase in pH by 0.12 units.
II. the pH of the solution drops, there is a decrease in pH of 0.12 units.
III. The pH of the initial buffer is 4.74
IV. In the last case, the pH of the buffer is pH= 5.17.
V. There is no significant change in pH.

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