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Addition polymers Knowledge-Based Practice

Chemistry · Organic Chemistry · Chemistry · Polymers & Biomolecules

5 Chemistry practice questions on Addition polymers. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    Which of the following compounds is the monomer used in the addition polymerization that produces poly(tetrafluoroethene)?

    • A) CF3−CF3\text{CF}_3-\text{CF}_3
    • B) CF2=CF2\text{CF}_2=\text{CF}_2
    • C) CHF=CF2\text{CHF}=\text{CF}_2
    • D) CF3−CF=CF2\text{CF}_3-\text{CF}=\text{CF}_2
  2. 2.

    Which of the following represents the correct repeating unit of the addition polymer formed from propene, CH2=CH−CH3\text{CH}_2=\text{CH}-\text{CH}_3?

    • A) −CH2−CH(CH3)−-\text{CH}_2-\text{CH}(\text{CH}_3)-
    • B) −CH2−CH2−CH2−-\text{CH}_2-\text{CH}_2-\text{CH}_2-
    • C) −CH=C(CH3)−-\text{CH}=\text{C}(\text{CH}_3)-
    • D) −CH2−CH2−-\text{CH}_2-\text{CH}_2-
  3. 3.

    In the addition polymerization of an alkene, which fundamental change in chemical bonding takes place as monomers connect to form the polymer backbone?

    • A) One π\pi bond in each monomer is converted into two new σ\sigma bonds linking the units.
    • B) One σ\sigma bond in each monomer is broken to produce two new π\pi bonds along the chain.
    • C) One σ\sigma bond is eliminated to release a small byproduct while forming a new π\pi bond.
    • D) Both the σ\sigma and π\pi bonds in each monomer are completely broken to form independent network bonds.
  4. 4.

    In the formation of an addition polymer from an alkene monomer, how does the empirical formula of the resulting polymer compare to that of the starting monomer?

    • A) It is identical to that of the monomer.
    • B) It has a higher proportion of hydrogen than the monomer due to saturation.
    • C) It has a lower proportion of hydrogen than the monomer due to dehydrogenation.
    • D) It differs because small by-product molecules are eliminated during chain propagation.
  5. 5.

    Which of the following statements correctly describes addition polymerization involving alkene monomers?

    • A) Carbon atoms forming the main chain retain their sp2sp^2 hybridization and preserve double bonds throughout the backbone.
    • B) Small by-product molecules such as water or hydrogen chloride are released at each step of chain propagation.
    • C) The empirical formula of the resulting polymer is identical to that of the starting monomer because no atoms are eliminated.
    • D) The monomer must contain at least two different condensation-active functional groups such as hydroxyl and carboxyl groups.

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