An unknown polymer sample was found to have the following molecular weight distribution: Molecular weight range 8,000 - 20,000 20,000 - 32,000 32,000 - 44,000 44,000 - 56,000 56,000 -68,000 68,000 - 80,000 80,000 - 92,000 Knowing that the sample is polypropylene, what would the number average degree of polymerization of the sample be if before preparation, we had filtered the monomer mixture with a 44 kDa dialysis tubing? (Hint: a dialysis tubing of a known molecular weight, only keeps molecules larger than that size) a. O b. O C. DP = 952 DP = 1588 DP = 1415 O d. DP 1217 e. DP = 1017 Xi 0.05 0.15 0.21 0.28 0.18 0.10 0.03 Wi 0.02 0.08 0.17 0.29 0.23 0.16 0.05
An unknown polymer sample was found to have the following molecular weight distribution: Molecular weight range 8,000 - 20,000 20,000 - 32,000 32,000 - 44,000 44,000 - 56,000 56,000 -68,000 68,000 - 80,000 80,000 - 92,000 Knowing that the sample is polypropylene, what would the number average degree of polymerization of the sample be if before preparation, we had filtered the monomer mixture with a 44 kDa dialysis tubing? (Hint: a dialysis tubing of a known molecular weight, only keeps molecules larger than that size) a. O b. O C. DP = 952 DP = 1588 DP = 1415 O d. DP 1217 e. DP = 1017 Xi 0.05 0.15 0.21 0.28 0.18 0.10 0.03 Wi 0.02 0.08 0.17 0.29 0.23 0.16 0.05
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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43)
Transcribed Image Text:An unknown polymer sample was found to have the following molecular weight distribution:
Molecular weight range
a.
8,000 - 20,000
20,000 - 32,000
32,000 - 44,000
44,000 - 56,000
56,000 - 68,000
68,000 - 80,000
80,000 - 92,000
Knowing that the sample is polypropylene, what would the number average degree of
polymerization of the sample be if before preparation, we had filtered the monomer mixture with a
44 kDa dialysis tubing? (Hint: a dialysis tubing of a known molecular weight, only keeps molecules
larger than that size)
O b.
O c.
DP = 952
DP = 1588
DP = 1415
O d. DP 1217
Xi
0.05
e. DP = 1017
0.15
0.21
0.28
0.18
0.10
Wi
0.02
0.03
0.08
0.17
0.29
0.23
0.16
0.05
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