Chapter 15 Practice Paper: Alcohols, carboxylic acids and polymers — question paper

Section A: Multiple-choice questions[10 marks]

Choose one answer for each question. Each question is worth 1 mark.

1. 1

   (Chemistry only) Which formula belongs to propanol?

   1. AC₃H₇OH
   2. BC₂H₅OH
   3. CCH₃OH
   4. DC₄H₉OH
   ( )
2. 2

   (Chemistry only) The glucose fermentation equation is correctly written as

   1. AC₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
   2. BC₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
   3. CC₆H₁₂O₆ → C₂H₅OH + CO₂
   4. D2C₆H₁₂O₆ → C₂H₅OH + 2CO₂
   ( )
3. 3

   (Chemistry only) The ethene route to ethanol needs

   1. Ayeast at 30 °C
   2. Bbromine water
   3. Csteam with a phosphoric acid catalyst
   4. Da reducing agent
   ( )
4. 4

   (Chemistry only) Wine turning to vinegar involves

   1. Areduction of ethanol
   2. Bpolymerisation of ethanol
   3. Cdistillation of ethanol
   4. Doxidation of ethanol to ethanoic acid
   ( )
5. 5

   (Chemistry only) Ethanoic acid in water

   1. Aionises only partially
   2. Bionises completely
   3. Cdoes not ionise at all
   4. Dbecomes an alkali
   ( )
6. 6

   (Chemistry only) Ethanoic acid is added to sodium hydrogencarbonate. The gas given off is

   1. Ahydrogen
   2. Bcarbon dioxide
   3. Coxygen
   4. Dethene
   ( )
7. 7

   Addition polymers form from monomers containing

   1. Atwo –COOH groups
   2. Ban –NH₂ group only
   3. Ca C=C double bond
   4. Dionic bonds
   ( )
8. 8

   In a drawn repeat unit of poly(propene), the bond between backbone carbons is

   1. Adouble
   2. Btriple
   3. Cmetallic
   4. Dsingle
   ( )
9. 9

   (Higher) Chains of polymer A pack closely; polymer B’s chains are kept apart by bulky side groups. Which is true?

   1. AA has stronger forces between chains and melts higher
   2. BB has stronger forces and melts higher
   3. Cboth melt at the same temperature
   4. Dmelting depends only on the catalyst
   ( )
10. 10

    (Chemistry only) Condensation polymerisation releases, for every new link,

    1. Aoxygen
    2. Ba small molecule such as water
    3. Ca metal ion
    4. Dnothing
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided.

1. 11

   (Chemistry only) Two manufacturers produce ethanol by different routes.

   1. (a)

      Write the equation for fermentation of glucose and state two conditions the yeast needs.

      [3]
   2. (b)

      Write the equation for the ethene route and name the catalyst.

      [2]
   3. (c)

      State one benefit and one drawback of making ethanol from ethene rather than glucose.

      [1]
2. 12

   (Chemistry only) A student adds equal volumes of 1.0 mol/dm³ hydrochloric acid and 1.0 mol/dm³ ethanoic acid to separate samples of magnesium ribbon.

   1. (a)

      Name the gas produced in both reactions.

      [1]
   2. (b)

      Explain which reaction fizzes faster.

      [3]
   3. (c)

      Write the equation for ethanoic acid reacting with sodium hydrogencarbonate.

      [2]
   4. (d)

      State and explain which acid has the higher pH at these concentrations.

      [2]
3. 13

   (Higher, Chemistry only) This question is about two polymerisations.

   1. (a)

      Describe addition polymerisation of propene, naming the monomer and stating any by-product.

      [2]
   2. (b)

      Describe condensation polymerisation into a polyester, naming the monomer types and the by-product.

      [2]
   3. (c)

      Name the natural polymer made from amino acids and the small molecule released as each link forms.

      [2]