Chemistry in Context
Chemistry in Context
8th Edition
ISBN: 9780073522975
Author: American Chemical Society
Publisher: McGraw-Hill Education
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Chapter 9, Problem 21Q
Interpretation Introduction

Interpretation:

The three properties which make silk desirable and the synthetic polymer which has chemical structure modeled after silk have to be identified.

Concept Introduction:

Polymers:

Monomers combine together to form polymers. Monomers are the repeating units of small molecules which link together to form polymers and the process is called as polymerization.

Two types of polymers:

  • • Synthetic and biopolymers.
  • • Biopolymers are naturally occurring polymers. DNA is an example for biopolymer and these types of polymers are synthesized by cells. Cotton also serves as an example for biopolymer.
  • • Polymers synthesized by scientists are called synthetic polymers and some two examples for synthesized polymer are nylon and polyester.

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Transmitance 3. Which one of the following compounds corresponds to this IR spectrum? Point out the absorption band(s) that helped you decide. OH H3C OH H₂C CH3 H3C CH3 H3C INFRARED SPECTRUM 0.8- 0.6 0.4- 0.2 3000 2000 1000 Wavenumber (cm-1) 4. Consider this compound: H3C On the structure above, label the different types of H's as A, B, C, etc. In table form, list the labeled signals, and for each one state the number of hydrogens, their shifts, and the splitting you would observe for these hydrogens in the ¹H NMR spectrum. Label # of hydrogens splitting Shift (2)
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Chemistry in Context

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