
Concept explainers
(a)
Interpretation:
The polymer not suitable for manufacture of margarine tubs which softens with oil has to be identified using given Table 9.1.
Concept Introduction:
Monomer: A molecule is considered as monomer when this molecule bonds with another identical molecule which results to form polymer.
Non-Polar solvents: Non-polar solvents are the solvent molecules in which the bonded atoms are with similar electronegativity.
(b)
Interpretation:
The transparent polymers have to be identified and also polymer used in manufacture of clear soft-drink bottles has to be indicated.
Concept Introduction:
Monomer: A molecule is considered as monomer when this molecule bonds with another identical molecule which results to form polymer.
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.
(c)
Interpretation:
The polymer used in manufacture of bottle caps has to be identified also another application where toughness in required has to be indicated.
Concept Introduction:
Monomer: A molecule is considered as monomer when this molecule bonds with another identical molecule which results to form polymer.
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.
The LDPE is more highly branched in which the molecular attractions will be less between the chains that makes the polymer to be softer and easily deformed.
The HDPE are fewer branches that is they are closely approaching each other with increasing molecular attractions that makes it stronger than LDPE.
(d)
Interpretation:
The polymer does not react with acids and hence used in production of containers for acidic beverages has to be indicated.
Concept Introduction:
Monomer: A molecule is considered as monomer when this molecule bonds with another identical molecule which results to form polymer.
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.

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Chapter 9 Solutions
Laboratory Manual Chemistry in Context
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