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A buffer was prepared from a concentrated propanoic acid (10.0 M) solution in two steps. First, 10.0 mL of the concentrated acid solution was diluted by adding 390 mL of distilled water. a) Calculate the concentration of the diluted propanoic acid solution. b) Next, 160 mL of 0.200 M NaOH was added to the diluted propanoic acid solution. i) Write down an equation representing the reaction between propanoic acid and NaOH. ii) By constructing an ICE table, calculate the pH of this buffer solution. The pKa of propanoic acid is 4.87 You should show all working in your answer. c) In a further investigation, a student prepared a pH 5.0 buffer solution by mixing propanoic acid and sodium propanoate. In the prepared buffer, the concentration of propanoic acid was 0.200 M. Determine the concentration of the sodium propanoate.

A buffer was prepared from a concentrated propanoic acid (10.0 M) solution in two steps. First, 10.0 mL of the concentrated acid solution was diluted by adding 390 mL of distilled water. a) Calculate the concentration of the diluted propanoic acid solution. b) Next, 160 mL of 0.200 M NaOH was added to the diluted propanoic acid solution. i) Write down an equation representing the reaction between propanoic acid and NaOH. ii) By constructing an ICE table, calculate the pH of this buffer solution. The pKa of propanoic acid is 4.87 You should show all working in your answer. c) In a further investigation, a student prepared a pH 5.0 buffer solution by mixing propanoic acid and sodium propanoate. In the prepared buffer, the concentration of propanoic acid was 0.200 M. Determine the concentration of the sodium propanoate.

Chemistry
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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A,bii and c please 

Question 4 A buffer was prepared from a concentrated propanoic acid (10.0 M) solution in two steps. First, 10.0 mL of the concentrated acid solution was diluted by adding 390 mL of distilled water. a) Calculate the concentration of the diluted propanoic acid solution. b) Next, 160 mL of 0.200 M NaOH was added to the diluted propanoic acid solution. i) Write down an equation representing the reaction between propanoic acid and NaOH. ii) By constructing an ICE table, calculate the pH of this buffer solution. The pKa of propanoic acid is 4.87 You should show all working in your answer. c) In a further investigation, a student prepared a pH 5.0 buffer solution by mixing propanoic acid and sodium propanoate. In the prepared buffer, the concentration of propanoic acid was 0.200 M. Determine the concentration of the sodium propanoate.
Transcribed Image Text:Question 4 A buffer was prepared from a concentrated propanoic acid (10.0 M) solution in two steps. First, 10.0 mL of the concentrated acid solution was diluted by adding 390 mL of distilled water. a) Calculate the concentration of the diluted propanoic acid solution. b) Next, 160 mL of 0.200 M NaOH was added to the diluted propanoic acid solution. i) Write down an equation representing the reaction between propanoic acid and NaOH. ii) By constructing an ICE table, calculate the pH of this buffer solution. The pKa of propanoic acid is 4.87 You should show all working in your answer. c) In a further investigation, a student prepared a pH 5.0 buffer solution by mixing propanoic acid and sodium propanoate. In the prepared buffer, the concentration of propanoic acid was 0.200 M. Determine the concentration of the sodium propanoate.
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10.0 mL of concentrated propanoic acid solution has a concentration of 10.0 M, was diluted by adding 390 mL ofdistilled water . 160 mL of 0.200 M NaOH was added to the diluted acid solution .We have to calculate - a) The concentration of the diluted propanoic acid solution .b) i. The equation that represents the reaction between propanoic acid and NaOH .ii. The pH of the buffer solution .c) The concentration of the sodium propanoate if the pH of the buffer is 5.0 .

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