For your blank titration set, review your Total Volume Delivered values, and test for / remove an outlying data point if necessary. - For an overshot or otherwise 'failed' titration, simply note the error, and remove the data point from your analysis. For an 'outlier', use the Grubbs Test (see lab manual Appendices) to determine whether the value is far enough from the average to ignore.
For your blank titration set, review your Total Volume Delivered values, and test for / remove an outlying data point if necessary. - For an overshot or otherwise 'failed' titration, simply note the error, and remove the data point from your analysis. For an 'outlier', use the Grubbs Test (see lab manual Appendices) to determine whether the value is far enough from the average to ignore.
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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USe the data in the table below to try and solve as much of the questions as possible
Transcribed Image Text:KOH concentration (M)
Fresh oil sample #
Weight of flask (empty) (g)
Weight of flask + oil (g)
Weight of oil (g)
Initial burette reading (ml)
Final burette reading (ml)
Volume of KOH (ml)
End point color
Fresh oil sample #
Initial burette reading (ml)
Final burette reading (ml)
Volume of KOH (ml)
Average KOH volume (ml)
KOH concentration (M)
Fresh oil sample #
Weight of flask (empty) (g)
Weight of flask + oil (g)
Weight of oil (g)
Initial burette reading (ml)
Final burette reading (ml)
Volume of KOH (ml)
Fresh oil sample #
Initial burette reading (ml)
Final burette reading (ml)
Volume of KOH (ml)
Average KOH volume (ml)
Table 1: FRESH Oil Raw Data
1
95.57
100.026
4.456
0.00
11.80
11.80
Green blue
2
96.378
100.850
4.472
11.80
20.10
8.3
Green blue
1
122.915
124.496
1.581
0.00
18.1
18.1
Table 2: Blank FRESH oil Titration Raw Data
1
2
0.00
4.50
4.50
8.30
4.50
3.80
Table 3: USED Oil Raw Data
2
119.780
121.843
2.063
18.1
35.1
17.0
3
120.480
124.88
4.472
20.10
28.00
7.9
Green blue
Table 4: Blank USED Oil Titration Raw Data
1
2
0.00
3.50
3.50
4.30
3.50
0.80
1.875
3
8.30
11.80
3.50
3
124.089
125.854
1.765
0.00
15.0
15.0
3
4.30
5.30
1.00
4
82.566
86.69
4.124
28.00
37.10
9.10
Green blue
4
11.80
15.60
3.80
4
123.365
125.099
1.734
15.0
34.50
19.5
4
5.30
7.50
2.20
For your blank titration set, review your Total Volume Delivered values, and test for / remove an outlying data
point if necessary.
For an overshot or otherwise 'failed' titration, simply note the error, and remove the data point from your
analysis.
For an 'outlier', use the Grubbs Test (see lab manual Appendices) to determine whether the value is far
enough from the average to ignore.
From your reviewed data sets, find the average "blank titration" volume.
For each of your oil "analysis titration" volumes, subtract the average "blank" volume to obtain corrected titration
volume.
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