(a)[1]
What does the term hydrocarbon mean?
(b)[5]
Describe how fractional distillation separates petroleum into fractions. In your answer, refer to changes of state and differences in boiling points.
(c(i))[1]
Describe how the number of carbon atoms influences the boiling range.
(c(ii))[1]
Determine the percentage by mass of fraction F in this petroleum sample.
(c(iii))[1]
Which fraction is mainly gaseous at $25\,^{\circ}\text{C}$?
(c(iv))[1]
Give one use for bitumen.
(d(i))[1]
Describe one condition needed for cracking.
(d(ii))[1]
Complete the chemical equation for the cracking of dodecane, $\text{C}_{12}\text{H}_{26}$, to make heptane, $\text{C}_7\text{H}_{16}$, and one other hydrocarbon. $\text{C}_{12}\text{H}_{26} \rightarrow \text{C}_7\text{H}_{16} +$ [BLANK]