(a(i))
What do the terms homogeneous and heterogeneous mean?
(a(ii))[8]
Using iron and its compounds as examples, describe the different ways homogeneous and heterogeneous catalysis operate. Pick one example of each kind, and for each one you should identify the catalyst, say whether it is homogeneous or heterogeneous, give a balanced equation for the reaction, and outline how the catalyst you have selected lowers the activation energy.
(b)[2]
Using the axes below, draw a complete reaction pathway diagram for this reaction and label $E_{a1}$, $E_{a2}$, $\Delta H^\circ_1$ and $\Delta H^\circ_2$.