Concept explainers
(a)
Interpretation:
The difference between linear and branched polyethylene needs to be explained.
Concept Introduction:
A polymer is a long chain molecule made of large number of monomer units. The monomer is repeating units of a polymer that are linked to each other to produce a molecule of polymer.
These monomer units are linked to each other either through the formation of peptide linkage or glycosidic linkage or by removal of any moiety such as a water molecule.
Polyvinyl chloride, Bakelite and polystyrene are some of the example of
(b)
Interpretation:
The difference between glucose and fructose needs to be explained.
Concept Introduction:
Glucose and fructose are monosaccharideswith molecular formula C6H12O6. Glucose is also known as aldohexose consisting of 6 carbon atom and an
On the other hand, fructose is a ketohexose consisting 6 carbon atoms and a
(c)
Interpretation:
The difference between maltose and sucrose needs to be explained.
Concept Introduction:
Maltose and sucrose both are disaccharide with molecular formula C12H22O11. Maltose consists of 2 molecules of glucose while sucrose contains 1 molecule of glucose and 1 molecule of fructose in it.
These are disaccharide which consists of carbon, hydrogen and oxygen atoms only.
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Chemistry: Principles and Reactions
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- Give one example each of(i) addition polymers(ii) condensation polymers(iii) copolymers.arrow_forwardAmylose (a form of starch) and cellulose are both polymers of glucose. What is the main structural difference between them? What roles do these two polymers have in nature?arrow_forwardA certain hydrocarbon has a molecular formula of C5H8. Which of the following is not a structural possibility for this hydrocarbon? (a) It is a cycloalkane. (b) It contains one ring and one double bond. (c) It contains two double bonds and no rings. (d) It is an alkyne.arrow_forward
- A long polymer chain, such as polyethylene ( -CH2CH2- )n, can potentially exist in solution as a chiral object. Give two examples of chiral structures that a polyethylene chain could adopt.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_forwardThe monomer glycine (NH2-CH2-COOH) can undergo condensation polymerization to form polyglycine, in which the structural units are joined by amide linkages.(a) What molecule is split off in the formation of polyglycine?(b) Draw the structure of the repeat unit in polyglycine.arrow_forward
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