(a)[2]
State two assumptions made by the kinetic theory of gases for ideal gases.
(b(i))
State the temperature and pressure conditions under which real gases are least like an ideal gas.
(b(ii))[2]
Explain why real gases fail to behave ideally under these conditions.
(c(i))
Gaseous aluminium chloride is dimeric at low temperatures, but the dimer splits apart on heating. $\text{Al}_2\text{Cl}_6(g) \rightarrow 2\text{AlCl}_3(g)$. State whether this dissociation is endothermic or exothermic. Explain your answer.
(c(ii))[3]
Choose one organic reaction catalysed by $\text{AlCl}_3$, and enter the structural formulae of the reactants and products in the boxes provided.