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 mL NaOH 0.00 20.75 1.31 21.01 2.34 21.10 3.91 21.13 5.93 21.20 7.90 21.30 11.35 21.41 13.46 21.51 15.50 21.61 16.92 21.77 18.00 21.93 18.35 22.10 18.95 22.27 19.43 22.37 19.93 22.48 20.48 22.57 V₂ = 23.62 Incorrect 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 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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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 V₂.
mL NaOH
mL NaOH
0.00
20.75
1.31
21.01
2.34
21.10
3.91
21.13
5.93
21.20
7.90
21.30
11.35
21.41
13.46
21.51
15.50
21.61
16.92
21.77
18.00
21.93
18.35
22.10
18.95
22.27
19.43
22.37
19.93
22.48
20.48
22.57
V₂ =
23.62
Incorrect
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
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
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 V₂. mL NaOH mL NaOH 0.00 20.75 1.31 21.01 2.34 21.10 3.91 21.13 5.93 21.20 7.90 21.30 11.35 21.41 13.46 21.51 15.50 21.61 16.92 21.77 18.00 21.93 18.35 22.10 18.95 22.27 19.43 22.37 19.93 22.48 20.48 22.57 V₂ = 23.62 Incorrect 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 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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