
(a)
Interpretation:
The systematic name for isoprene needs to be determined.
Concept Introduction :
Small units of organic molecules called as monomers can link or react with each other to form large molecules called
(b)
Interpretation:
The structure of natural rubber and gutta percha with three repeating units of the monomer and configuration around carbon-carbon double bonds needs to be determined.
Concept Introduction :
Monomers are small units of organic molecules that link with other monomer to form long chain bigger molecules called polymers. The monomers have the special feature of functionality that allows formation of chemical bonds with other monomers. Isoprene polymerizes to give polyisoprene.

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Chapter 21 Solutions
Chemical Principles
- A mixture of C7H12O2, C9H9OCl, biphenyl and acetone was put together in a gas chromatography tube. Please decide from the GC resutls which correspond to the peak for C7,C9 and biphenyl and explain the reasoning based on GC results. Eliminate unnecessary peaks from Gas Chromatography results.arrow_forwardIs the molecule chiral, meso, or achiral? CI .CH3 H₂C CIarrow_forwardPLEASE HELP ! URGENT!arrow_forward
- Identify priority of the substituents: CH3arrow_forwardHow many chiral carbons are in the molecule? OH F CI Brarrow_forwardA mixture of three compounds Phen-A, Acet-B and Rin-C was analyzed using TLC with 1:9 ethanol: hexane as the mobile phase. The TLC plate showed three spots of R, 0.1 and 0.2 and 0.3. Which of the three compounds (Phen-A; Acet-B or Rin-C) would have the highest (Blank 1), middle (Blank 2) and lowest (Blank 3) spot respectively? 0 CH: 0 CH, 0 H.C OH H.CN OH Acet-B Rin-C phen-A A A <arrow_forward
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