Please show all work. 1. estimate the position of the equivalance point 2. estimate the position of the half-equivalance point 3. calculate the percent error in the experimental pKa value (accepted pKa value is 4.75) 4. Identify the buffering region 5. Identify the volme ranges that corresponed to the initial color and the final color of the indicator
Please show all work. 1. estimate the position of the equivalance point 2. estimate the position of the half-equivalance point 3. calculate the percent error in the experimental pKa value (accepted pKa value is 4.75) 4. Identify the buffering region 5. Identify the volme ranges that corresponed to the initial color and the final color of the indicator
Chapter10: Potentiometry And Redox Titrations
Section: Chapter Questions
Problem 10P
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Question
Please show all work.
1. estimate the position of the equivalance point
2. estimate the position of the half-equivalance point
3. calculate the percent error in the experimental pKa value (accepted pKa value is 4.75)
4. Identify the buffering region
5. Identify the volme ranges that corresponed to the initial color and the final color of the indicator
| Volume | pH |
| 0 | 2.88 |
| 0.05 | 2.9 |
| 0.14 | 2.95 |
| 0.55 | 3.14 |
| 1.15 | 3.35 |
| 1.45 | 3.44 |
| 1.97 | 3.56 |
| 2.36 | 3.63 |
| 2.77 | 3.69 |
| 3.17 | 3.75 |
| 3.78 | 3.84 |
| 4.09 | 3.86 |
| 4.59 | 3.92 |
| 5 | 3.98 |
| 5.39 | 4 |
| 5.8 | 4.03 |
| 6.3 | 4.09 |
| 6.6 | 4.11 |
| 6.99 | 4.13 |
| 7.5 | 4.17 |
| 8.01 | 4.22 |
| 8.31 | 4.23 |
| 8.8 | 4.27 |
| 9.2 | 4.3 |
| 9.5 | 4.3 |
| 9.91 | 4.34 |
| 10.53 | 4.37 |
| 10.92 | 4.4 |
| 11.33 | 4.41 |
| 11.63 | 4.44 |
| 12.14 | 4.47 |
| 12.53 | 4.47 |
| 12.94 | 4.51 |
| 13.35 | 4.52 |
| 13.74 | 4.56 |
| 14.14 | 4.56 |
| 14.54 | 4.59 |
| 15.04 | 4.62 |
| 15.33 | 4.64 |
| 15.73 | 4.65 |
| 16.22 | 4.67 |
| 16.62 | 4.71 |
| 17.02 | 4.72 |
| 17.33 | 4.73 |
| 17.73 | 4.75 |
| 18.34 | 4.79 |
| 18.63 | 4.8 |
| 19.02 | 4.82 |
| 19.43 | 4.84 |
| 19.92 | 4.88 |
| 20.33 | 4.9 |
| 20.73 | 4.92 |
| 21.14 | 4.94 |
| 21.64 | 4.98 |
| 22.04 | 5 |
| 22.44 | 5.01 |
| 22.93 | 5.05 |
| 23.44 | 5.08 |
| 23.83 | 5.12 |
| 24.23 | 5.13 |
| 24.54 | 5.15 |
| 25.05 | 5.18 |
| 25.45 | 5.22 |
| 25.94 | 5.25 |
| 26.34 | 5.29 |
| 26.85 | 5.35 |
| 27.24 | 5.37 |
| 27.66 | 5.41 |
| 28.17 | 5.47 |
| 28.58 | 5.5 |
| 29.08 | 5.57 |
| 29.58 | 5.64 |
| 29.88 | 5.69 |
| 30.28 | 5.77 |
| 30.79 | 5.88 |
| 31.18 | 5.97 |
| 31.58 | 6.12 |
| 32.08 | 6.38 |
| 32.38 | 6.67 |
| 32.79 | 10.07 |
| 33.29 | 10.89 |
| 33.69 | 11.1 |
| 34.09 | 11.24 |
| 34.48 | 11.36 |
| 34.88 | 11.44 |
| 35.38 | 11.52 |
| 35.78 | 11.58 |
| 36.18 | 11.63 |
| 36.58 | 11.68 |
| 36.98 | 11.71 |
| 37.39 | 11.76 |
| 37.89 | 11.8 |
| 38.2 | 11.82 |
| 38.7 | 11.85 |
| 39.09 | 11.89 |
| 39.59 | 11.9 |
| 39.98 | 11.93 |
| 40.38 | 11.95 |
| 40.88 | 11.98 |
| 41.18 | 11.98 |
| 41.57 | 12.01 |
| 42.06 | 12.02 |
| 42.47 | 12.05 |
| 42.97 | 12.06 |
| 43.37 | 12.08 |
| 43.77 | 12.09 |
| 44.17 | 12.1 |
| 44.67 | 12.12 |
| 45.06 | 12.12 |
| 45.37 | 12.14 |
| 45.76 | 12.16 |
| 46.17 | 12.16 |
| 46.67 | 12.18 |
| 47.05 | 12.19 |
| 47.55 | 12.2 |
| 47.95 | 12.21 |
| 48.35 | 12.22 |
| 48.65 | 12.22 |
| 49.05 | 12.23 |
| 49.55 | 12.23 |
| 49.85 | 12.25 |
| 50 | 12.24 |
the first picture is the example
2nd picture is the graph from the data need to be filled in
Transcribed Image Text:Part I: pH vs Volume of NaOH Added
14
12
10
8
6
4
10
15
20
25
30
35
40
45
50
2.
Transcribed Image Text:pH vs. Volume of NaOH
14
10
8.8-
Equivalence point
Buffering
pK.-4.8-
Half-equiyalence point
red
vellow
25
as
15.5 ml
Velume of NaOH
30.8 ml
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