Describe how the rate of this reaction varies as the concentration of N$_2$O$_5$ changes.
Explain your answer to a(i) using collision theory.
Describe and explain how raising the temperature affects the rate of this reaction.
Sulfur dioxide is an atmospheric pollutant. Describe one atmospheric source of sulfur dioxide.
Nitrogen(IV) oxide catalyses the oxidation of sulfur dioxide to sulfur trioxide in the atmosphere. $\text{SO}_2 + \text{NO}_2 \rightarrow \text{SO}_3 + \text{NO}$ $\text{NO} + \tfrac{1}{2}\text{O}_2 \rightarrow \text{NO}_2$ Nitrogen(IV) oxide increases the rate of reaction. What other property of a catalyst is demonstrated by these equations?
An incomplete energy profile for the oxidation of sulfur dioxide to sulfur trioxide is given. On the diagram, add and label the pathway for the uncatalysed reaction, then add and label the pathway for the catalysed reaction.
Is the reaction in c(i) exothermic or endothermic? Give a reason for your answer.