(a)[1]
State one condition needed for this reaction.
(b)[1]
Explain why this reaction counts as a substitution reaction.
(c)[3]
Show by calculation that the enthalpy change of the reaction of methane with chlorine, $\Delta H$, is $-119\text{ kJ/mol}$.
(d)[3]
Complete the reaction pathway diagram in Fig. 3.2 for the reaction of methane with chlorine. Label the reactants, the products, the enthalpy change of the reaction $\Delta H$ and the activation energy $E_a$.
(e)[1]
Draw a dot-and-cross diagram to show the electronic arrangement in a methane molecule. Show only the outer-shell electrons.