(a)[1]
State the C-C-C bond angle in benzene and identify the hybridisation of the carbon atoms.
(b(i))[1]
The first stage in the reaction is the creation of the $+\text{CH}_2\text{CH}_3$ electrophile. Write an equation for the reaction that produces this electrophile.
(b(ii))[3]
Describe how benzene reacts with the $+\text{CH}_2\text{CH}_3$ electrophile. Include every relevant curly arrow and charge.
(c(i))[1]
Identify a suitable reagent that shows this contrast in reactivity. The reagent selected should produce visibly different results with chlorobenzene and chloroethane.
(c(ii))[1]
Write equations for any reactions that take place.
(c(iii))[1]
Explain why chlorobenzene and chloroethane differ in reactivity in nucleophilic substitution reactions.