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Concept explainers
(a)
Interpretation:
The equation has to be written for the formation of Polystyrene from styrene
Concept Introduction:
The polymerisation reaction of styrene monomer unit gives polystyrene. The polystyrene is an
(b)
Interpretation:
The equation has to be written for the formation of PET from ethylene glycol and terephthalic acid.
Concept Introduction:
However, PET is a
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Chapter 23 Solutions
Pac Mindlink Owlv2 (24 Months) Chemistry & Chemical Reactivity 9e
- (a) Draw the structure of polystyrene, the chapter-opening molecule, which is formed by polymerizing the monomer styrene, C6H5CH = CH2. (b) What monomer is used to form poly(vinyl acetate), a polymer used in paints and adhesives?arrow_forwardA polymer closely related to PET is PBT, which is made from terephthalic acid and butane-1,4-diol.(a) Propose a structure for PBT and write the condensed formula for the structure.(b) What does PBT stand for? That is, what do you expect the trivial name of PBT to be?(c) Would you expect PBT to have a higher or lower melting point than PET? Justify your answer.(d) PBT, rather than PET, is used in molding because it crystallizes faster. Explain why PBT crystallizes more quickly than PET.arrow_forwardPolychlorinated Biphenyls (PCBs) are chemicals formed by attaching one or more chlorine atoms to a pair of connected benzene rings. (a) Summarise the adverse health effects associated with exposure to PCBs. (b) With a suitable illustration, explain the action of PCBs toxicity.arrow_forward
- 3. polyglycine, (a) (b) The monomer glycine (NH₂-CH₂-CO₂H) can undergo condensation polymerization to form in which the structural units are joined by amide linkages. What molecule is split off in the formation of polyglycine? Draw the structure of the repeating unit in polyglycine.arrow_forward(a) What is the empirical formula of starch? (b) What isthe monomer that forms the basis of the starch polymer?(c) What bond connects the monomer units in starch:amide, acid, ether, ester, or alcohol?arrow_forwardDraw complete structural diagrams of the following compounds. (a) 2-methyl,pent-2-ene (b) propyne (c) 2,3-dimethyl butane (d) cycloheptanearrow_forward
- What is the polymer name of chloroethene ?arrow_forwardDiscuss FOUR (4) differences between addition polymerization and condensation polymerization.arrow_forward3. Dacron is the brand name for the polymer that is made from ethane-1,2-diol and benzene-1,4-dicarboxylic acid. (a) What type of polymer is Dacron? (b) When the two monomers combine, what type of reaction do they undergo and what molecule is eliminated? (c) What is the name for the linkages that join the monomers together?(d) Draw the monomers and the polymer of the reaction to create Dacron. (Use a condensed structural formula in your answer.) HC-C styrene H-O-C- ethane-1,2-diol I H OH НО. 206 H -C-0-H H benzene-1.4-dicarboxylic acid.arrow_forward
- (a) What is the empirical formula of cellulose? (b) Whatis the monomer that forms the basis of the cellulose polymer?(c) What bond connects the monomer units in cellulose:amide, acid, ether, ester, or alcohol?arrow_forwardPoly(lactic acid) (PLA) has received much recent attention because the lactic acid monomer [CH3CH(OH)COOH] from which it is made can be obtained from carbohydrates rather than petroleum. This makes PLA a more “environmentally friendly” polyester. (A more in-depth discussion of green polymer synthesis is presented in Chapter 30.) Draw the structure of PLA.arrow_forwardPoly(lactic acid) (PLA) has received much recent attention because the lactic acid monomer [CH3CH(OH)COOH] from which it is made can be obtained from carbohydrates rather than petroleum. This makes PLA a more “environmentally friendly” polyester. (A further discussion of green polymer synthesis is presented in Chapter 28.) Draw the structure of PLA.arrow_forward
- Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningIntroductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
- World of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning
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