(a)[1]
Explain how this structure indicates that angelic acid is an unsaturated compound.
(b)[1]
Deduce the molecular formula for angelic acid.
(c(i))[1]
Angelic acid is a weak acid. Define the term acid.
(c(ii))[1]
Explain what is meant by weak when it refers to acids.
(d(i))[1]
Angelic acid can be polymerised. State the type of polymerisation involved.
(d(ii))[2]
Draw the partial polymer structure of angelic acid. Include two repeat units.
(e)[1]
Angelic acid reacts with methanol, $\text{CH}_3\text{OH}$, to make an ester. Complete the structure of this ester so that all atoms and all bonds are shown.
(f)[2]
Construct the equation for methanol's complete combustion.