Lesson 17C.3
17C.3 Polyesters Quiz: Pearson Edexcel Chemistry, Unit 17
20 questions
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Lesson 17C.3, Polyesters: 20 multiple choice questions for the Pearson Edexcel Chemistry (9CH0), Unit 17: Organic Chemistry II, written with Revision Ninja.
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The 20 questions
-
What type of polymerisation is used to produce polyesters?
- Free radical
- Electrophilic
- Addition
- Condensation
-
Which two monomer types react together to form a polyester?
- Diol and alkene
- Diol and diamine
- Dicarboxylic acid and diol
- Dicarboxylic acid and diamine
-
What small molecule is eliminated when a polyester forms from a dicarboxylic acid and a diol?
- Ammonia
- Carbon dioxide
- Hydrogen chloride
- Water
-
Which functional link forms the polymer backbone of a polyester?
- Peptide link
- Amide link
- Ester link
- Ether link
-
Which two monomers react to produce poly(ethylene terephthalate)?
- Benzoic acid and ethanol
- Benzene-1,4-dicarboxylic acid and ethane-1,2-diol
- Benzenediol and ethanedioic acid
- Benzene and ethene
-
How many total carbon atoms are in the repeat unit of hexanedioic acid and butane-1,4-diol polyester?
- 10
- 12
- 6
- 8
-
Why are polyesters susceptible to chemical degradation by hydrolysis?
- Strong ionic bonds
- Carbonyl double bonds
- Non-polar C-C bonds
- Polar ester links
-
A polyester is made from 1.0 mol of a dicarboxylic acid and 1.0 mol of a diol, with complete reaction. How many moles of water are eliminated per mole of repeat unit?
- 4
- 0
- 2
- 1
-
Why is a polyester classified as a condensation polymer?
- Contains double bonds
- Forms branched chains
- Requires a catalyst
- Eliminates small molecules
-
What functional link connects the monomer units in nylon?
- Glycosidic link
- Amide link
- Ether link
- Ester link
-
Which dicarboxylic acid is used with a diol to produce an aromatic polyester?
- Ethanedioic acid
- Benzene-1,4-dicarboxylic acid
- Hexanedioic acid
- Methanoic acid
-
Which polymer property increases when the diol chain length in a polyester increases?
- Density
- Flexibility
- Acidity
- Reactivity
-
A polyester has a relative repeat unit mass of 192. How many repeat units make up a molecule with a relative molecular mass of 19 200?
- 100
- 200
- 10
- 1000
-
Which small molecule is eliminated when a diol reacts with a dicarboxylic acid?
- Ammonia
- Water
- Hydrogen chloride
- Carbon dioxide
-
Which main intermolecular force exists between adjacent polyester chains?
- Permanent dipole-dipole
- Hydrogen bonding
- London dispersion forces
- Ionic bonding
-
How many ester links are present in the repeat unit of a polyester made from a diacid and a diol?
- Four
- Three
- One
- Two
-
Which molecule is a monomer used to make a polyester in industry?
- Ethane-1,2-diol
- Ethanamide
- Ethanenitrile
- Ethene
-
Which dicarboxylic acid is used as a monomer to manufacture poly(ethylene terephthalate)?
- Hexanedioic acid
- Benzene-1,4-dicarboxylic acid
- Benzene-1,2-dicarboxylic acid
- Ethanedioic acid
-
A polyester has a repeat unit molar mass of 192 g mol-1. What is the molar mass of a chain with 50 repeat units?
- 960 g mol-1
- 9600 g mol-1
- 19 200 g mol-1
- 3840 g mol-1
-
What mass of water is eliminated per mole of ester links formed during polycondensation?
- 9 g
- 18 g
- 36 g
- 1 g
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