(a(i))[1]
What happens to the petroleum at point X, before it goes into the fractionating column?
(a(ii))[2]
Give two differences between fraction O and fraction L.
(b)[2]
Give two characteristics of members of a homologous series, apart from sharing the same general formula.
(c)[2]
Draw structures for two isomers having the formula $\text{C}_5\text{H}_{12}$.
(d)[1]
Draw the structure of one organic product formed in this substitution reaction.
(e(i))[1]
Explain how the name of isoprene indicates that it contains a C=C double bond.
(e(ii))[3]
Calculate the empirical formula of isoprene. Include all working.
(e(iii))[1]
What extra information is needed to work out the molecular formula of isoprene?