The molecular weight (i.e. molar mass) is often considered the most important aspect of a polymer. The resultant chemical and physical properties that arise from these macromolecules have lead to unique behaviors applicable across many different industries. However, molecular weight can be described and calculated using different methods. Describe, compare, and contract the three most common methods for reporting the molecular weight of a polymer: Mw, Mn, Mz.
The molecular weight (i.e. molar mass) is often considered the most important aspect of a polymer. The resultant chemical and physical properties that arise from these macromolecules have lead to unique behaviors applicable across many different industries. However, molecular weight can be described and calculated using different methods. Describe, compare, and contract the three most common methods for reporting the molecular weight of a polymer: Mw, Mn, Mz.
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter22: Organic Chemistry And Biochemistry
Section: Chapter Questions
Problem 9QE
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Transcribed Image Text:The molecular weight (i.e. molar mass) is often
considered the most important aspect of a polymer.
The resultant chemical and physical properties that
arise from these macromolecules have lead to
unique behaviors applicable across many different
industries. However, molecular weight can be
described and calculated using different methods.
Describe, compare, and contract the three most
common methods for reporting the molecular
weight of a polymer: Mw, Mn, Mz.
Expert Solution
Step 1
Since, polymers have very long chain of monomers. We can not determine exact molar mass directly as it may break. So, we find average molar mass.
There are different methods to determine average molar masses of long chain polymers. Some of them are discussed below:
1) Number Average Molar Mass
2) Weight Average Molar Mass
3) Z- Average Molar Mass
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