Procedure A student used a pH meter to collect data for the titration of an unknown concentration of ethanoic (acetic) acid with a 0.150 mol/L solution of sodium hydroxide. The data table from the investigation is shown in the table below. & Enter the data from the table into a spreadsheet program. Use the program to plot the results, with pH on the vertical axis and volume of base added on the horizontal axis. Make sure you enter labels for each axis, and provide a suitable title for your graph. Print your graph. Titration of Ethanoic Acid with Sodium Hydroxide Volume of ethanoic acid = 25.00 ml [NaOH] = 0.150 mol/L b On your graph, shade the buffer region. Identify the pH range of an indicator suitable for this titration. Name two indicators that would have endpoints suitable for this Volume of NaOH(aq) Added (mL) pH titration. None 2.83 C The titration curve should show a steep change in pH near the equivalence point. Choose a point halfway along the portion of rapid change on the graph. Label this the equivalence point. 2.00 3.84 4.11 4.20 7.98 4.64 11.95 5.03 Analysis a From your graph, determine the pH and volume of base added at the equivalence point. 14.08 5.27 16.05 5.61 17.00 5.90 b Calculate the concentration of the ethanoic (acetic) acid solution. 17.21 6.00 C. Explain why the pH at the equivalence point is not 7, the pH of neutral water. 17.39 6.09 17.62 6.23 d What ions and molecules are in solution well before the equivalence point, such as at 10 mL of base added? How does this compare with the solution well after the equivalence point, such as at 20 ml of base added? 17.99 6.74 18.18 8.80 18.39 10.92 18.80 12.24 20.00 12.56 22.03 12.69
Procedure A student used a pH meter to collect data for the titration of an unknown concentration of ethanoic (acetic) acid with a 0.150 mol/L solution of sodium hydroxide. The data table from the investigation is shown in the table below. & Enter the data from the table into a spreadsheet program. Use the program to plot the results, with pH on the vertical axis and volume of base added on the horizontal axis. Make sure you enter labels for each axis, and provide a suitable title for your graph. Print your graph. Titration of Ethanoic Acid with Sodium Hydroxide Volume of ethanoic acid = 25.00 ml [NaOH] = 0.150 mol/L b On your graph, shade the buffer region. Identify the pH range of an indicator suitable for this titration. Name two indicators that would have endpoints suitable for this Volume of NaOH(aq) Added (mL) pH titration. None 2.83 C The titration curve should show a steep change in pH near the equivalence point. Choose a point halfway along the portion of rapid change on the graph. Label this the equivalence point. 2.00 3.84 4.11 4.20 7.98 4.64 11.95 5.03 Analysis a From your graph, determine the pH and volume of base added at the equivalence point. 14.08 5.27 16.05 5.61 17.00 5.90 b Calculate the concentration of the ethanoic (acetic) acid solution. 17.21 6.00 C. Explain why the pH at the equivalence point is not 7, the pH of neutral water. 17.39 6.09 17.62 6.23 d What ions and molecules are in solution well before the equivalence point, such as at 10 mL of base added? How does this compare with the solution well after the equivalence point, such as at 20 ml of base added? 17.99 6.74 18.18 8.80 18.39 10.92 18.80 12.24 20.00 12.56 22.03 12.69
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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![Procedure
A student used a pH meter to collect data for the titration
of an unknown concentration of ethanoic (acetic) acid with
a 0.150 mol/L solution of sodium hydroxide. The data table
from the investigation is shown in the table below.
& Enter the data from the table into a spreadsheet
program. Use the program to plot the results, with pH
on the vertical axis and volume of base added on the
horizontal axis. Make sure you enter labels for each axis,
and provide a suitable title for your graph. Print your
graph.
Titration of Ethanoic Acid with Sodium Hydroxide
Volume of ethanoic acid = 25.00 ml
[NaOH] = 0.150 mol/L
b On your graph, shade the buffer region. Identify the pH
range of an indicator suitable for this titration. Name two
indicators that would have endpoints suitable for this
Volume of NaOH(aq)
Added (mL)
pH
titration.
None
2.83
C The titration curve should show a steep change in pH
near the equivalence point. Choose a point halfway
along the portion of rapid change on the graph. Label
this the equivalence point.
2.00
3.84
4.11
4.20
7.98
4.64
11.95
5.03
Analysis
a From your graph, determine the pH and volume of base
added at the equivalence point.
14.08
5.27
16.05
5.61
17.00
5.90
b Calculate the concentration of the ethanoic (acetic) acid
solution.
17.21
6.00
C. Explain why the pH at the equivalence point is not 7, the
pH of neutral water.
17.39
6.09
17.62
6.23
d What ions and molecules are in solution well before
the equivalence point, such as at 10 mL of base added?
How does this compare with the solution well after the
equivalence point, such as at 20 ml of base added?
17.99
6.74
18.18
8.80
18.39
10.92
18.80
12.24
20.00
12.56
22.03
12.69](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe87e7464-5f1b-43fb-a714-7be3ea40caa5%2Ff25317f1-2395-40f3-bab5-6586c09ffd46%2Frfso68i_processed.png&w=3840&q=75)
Transcribed Image Text:Procedure
A student used a pH meter to collect data for the titration
of an unknown concentration of ethanoic (acetic) acid with
a 0.150 mol/L solution of sodium hydroxide. The data table
from the investigation is shown in the table below.
& Enter the data from the table into a spreadsheet
program. Use the program to plot the results, with pH
on the vertical axis and volume of base added on the
horizontal axis. Make sure you enter labels for each axis,
and provide a suitable title for your graph. Print your
graph.
Titration of Ethanoic Acid with Sodium Hydroxide
Volume of ethanoic acid = 25.00 ml
[NaOH] = 0.150 mol/L
b On your graph, shade the buffer region. Identify the pH
range of an indicator suitable for this titration. Name two
indicators that would have endpoints suitable for this
Volume of NaOH(aq)
Added (mL)
pH
titration.
None
2.83
C The titration curve should show a steep change in pH
near the equivalence point. Choose a point halfway
along the portion of rapid change on the graph. Label
this the equivalence point.
2.00
3.84
4.11
4.20
7.98
4.64
11.95
5.03
Analysis
a From your graph, determine the pH and volume of base
added at the equivalence point.
14.08
5.27
16.05
5.61
17.00
5.90
b Calculate the concentration of the ethanoic (acetic) acid
solution.
17.21
6.00
C. Explain why the pH at the equivalence point is not 7, the
pH of neutral water.
17.39
6.09
17.62
6.23
d What ions and molecules are in solution well before
the equivalence point, such as at 10 mL of base added?
How does this compare with the solution well after the
equivalence point, such as at 20 ml of base added?
17.99
6.74
18.18
8.80
18.39
10.92
18.80
12.24
20.00
12.56
22.03
12.69
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