1.1. A molecule of hydrocarbon X, C₄H₈ is shown in Figure 1. 

Figure 1

i) Give the name of hydrocarbon X shown in Figure 1. 

(1)

ii) Complete the balanced symbol equation for the reaction of hydrocarbon X, C₄H₈ with bromine. 

C₄H₈  +   ...............................................   →   ...............................................

(2)

1.2. Draw the repeating unit of the addition polymer formed when hydrocarbon X undergoes polymerisation. 

1.3. Figure 2 shows the arrangement of atoms in a molecule of an alcohol.

Figure 2

i) Give the name of the carbon-containing product formed when the alcohol in Figure 2 undergoes dehydration. 

(1)

ii) Give the formula of the functional group of the product formed when the alcohol in Figure 2 undergoes oxidation. 

(1)

1.4. Higher Only

Polyesters can be formed when an alcohol reacts with a carboxylic acid. 

These are known as condensation polymers. 

Figure 3 shows the repeating unit of a polyester formed when a carboxylic acid reacts with an alcohol. 

Figure 3

i) Give the formula of the other product formed. 

ii) Draw the structure of one molecule of the alcohol used to produce the polyester shown in Figure 3, showing all the covalent bonds.