(a(i))[1]
State the term used for a formula such as $\text{C}_n\text{H}_{2n}\text{O}_2$.
(a(ii))[1]
Deduce the value of $n$ for the ester propyl ethanoate.
(b)[1]
Draw the displayed formula for ethyl butanoate.
(c(i))[3]
Complete Fig. 7.2 so that it shows the structure of two repeat units of this polyester.
(c(ii))[1]
Name the kind of polymerisation happening in this reaction.
(d)[2]
Describe the chemical steps used to turn used PET into a fresh plastic.
(e(i))[3]
State the three products formed when ethanoic acid reacts with sodium carbonate.
(e(ii))[2]
Describe the arrangement and movement of particles in a liquid.