A solution of an unknown weak base (0.495 g in 100 mL of water) was prepared and titrated with standardized 0.113 M HCİ and the pH of the solution was plotted as a function of titrant added (shown below). Titration of a Weak Base With 0.113 M HCI 12 10 2 10 20 30 40 50 60 70 80 90 Volume of HCl added (mL) Possible identities for the three liquid bases are shown in the table below. Base рyrole pyrimidine pyridine triethylamine K 2.51 x 10-14 1.25 x 10-13 1.70 x 109 5.30 x 104 Density (g/mL) 0.967 1.02 0.982 0.762 Based on the data above, identify the weak base and explain your selection. The best explanations will account for all relevant experimental data. Additionally, suggest an indicator to use for this titration if it were to be done without a pH meter.
A solution of an unknown weak base (0.495 g in 100 mL of water) was prepared and titrated with standardized 0.113 M HCİ and the pH of the solution was plotted as a function of titrant added (shown below). Titration of a Weak Base With 0.113 M HCI 12 10 2 10 20 30 40 50 60 70 80 90 Volume of HCl added (mL) Possible identities for the three liquid bases are shown in the table below. Base рyrole pyrimidine pyridine triethylamine K 2.51 x 10-14 1.25 x 10-13 1.70 x 109 5.30 x 104 Density (g/mL) 0.967 1.02 0.982 0.762 Based on the data above, identify the weak base and explain your selection. The best explanations will account for all relevant experimental data. Additionally, suggest an indicator to use for this titration if it were to be done without a pH meter.
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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Question
![A solution of an unknown weak base (0.495 g in 100 mL of water) was prepared and
titrated with standardized 0.113 M HCÌi and the pH of the solution was plotted as a
function of titrant added (shown below).
Titration of a Weak Base With 0.113 M HCI
12
10
10
20
30
40
50
60
70
80
90
Volume of HCl added (ml)
Possible identities for the three liquid bases are shown in the table below.
Base
pyrole
pyrimidine
pyridine
triethylamine
2.51 x 10-14
1.25 x 10-13
1.70 x 10-9
5.30 x 104
Density (g/mL)
0.967
1.02
0.982
0.762
Based on the data above, identify the weak base and explain your selection. The
best explanations will account for all relevant experimental data. Additionally,
suggest an indicator to use for this titration if it were to be done without a pH
meter.
Hd](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8b6b2aae-bbe6-4e3b-bf20-d97058054232%2Fb36ab069-199a-4a3d-afcb-02f7281f07e3%2Fyrdactr_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A solution of an unknown weak base (0.495 g in 100 mL of water) was prepared and
titrated with standardized 0.113 M HCÌi and the pH of the solution was plotted as a
function of titrant added (shown below).
Titration of a Weak Base With 0.113 M HCI
12
10
10
20
30
40
50
60
70
80
90
Volume of HCl added (ml)
Possible identities for the three liquid bases are shown in the table below.
Base
pyrole
pyrimidine
pyridine
triethylamine
2.51 x 10-14
1.25 x 10-13
1.70 x 10-9
5.30 x 104
Density (g/mL)
0.967
1.02
0.982
0.762
Based on the data above, identify the weak base and explain your selection. The
best explanations will account for all relevant experimental data. Additionally,
suggest an indicator to use for this titration if it were to be done without a pH
meter.
Hd
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