Data for the titration of 100.00 mL of a weak acid by NaOH are given in the table. Find the end point by preparing a Gran plot, using the last 10% of the volume prior to Ve. mL NaOH 0.00 1.31 2.34 3.91 5.93 7.90 pH 4.14 4.30 4.44 4.61 4.79 4.95 mL NaOH 20.75 21.01 21.10 21.13 21.20 21.30 pH 6.09 6.14 6.15 6.16 6.17 6.19 mL NaOH 22.70 22.76 22.80 22.85 22.91 22.97 pH 6.70 6.74 6.78 6.82 6.86 6.92
Data for the titration of 100.00 mL of a weak acid by NaOH are given in the table. Find the end point by preparing a Gran plot, using the last 10% of the volume prior to Ve. mL NaOH 0.00 1.31 2.34 3.91 5.93 7.90 pH 4.14 4.30 4.44 4.61 4.79 4.95 mL NaOH 20.75 21.01 21.10 21.13 21.20 21.30 pH 6.09 6.14 6.15 6.16 6.17 6.19 mL NaOH 22.70 22.76 22.80 22.85 22.91 22.97 pH 6.70 6.74 6.78 6.82 6.86 6.92
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 34QRT
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Transcribed Image Text:Data for the titration of 100.00 mL of a weak acid by NaOH are given in the table. Find the end point by preparing a Gran plot,
using the last 10% of the volume prior to Ve.
mL NaOH
0.00
1.31
2.34
3.91
5.93
7.90
11.35
13.46
15.50
16.92
18.00
18.35
18.95
19.43
19.93
20.48
V₂ =
pH
4.14
4.30
4.44
4.61
4.79
4.95
5.19
5.35
5.50
5.63
5.71
5.77
5.82
5.89
5.95
6.04
mL NaOH
20.75
21.01
21.10
21.13
21.20
21.30
21.41
21.51
21.61
21.77
21.93
22.10
22.27
22.37
22.48
22.57
pH
6.09
6.14
6.15
6.16
6.17
6.19
6.22
6.25
6.27
6.32
6.37
6.42
6.48
6.53
6.58
6.63
mL NaOH
22.70
22.76
22.80
22.85
22.91
22.97
23.01
23.11
23.17
23.21
23.30
23.32
23.40
23.46
23.55
pH
6.70
6.74
6.78
6.82
6.86
6.92
6.98
7.11
7.20
7.30
7.49
7.74
8.30
9.21
9.86
mL
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