Write an equation showing the formation of ammonia in the Haber process.
The Haber process is normally run at a high pressure of between $60$ and $200$ atmospheres (between $60 \times 10^5\,\text{Pa}$ and $200 \times 10^5\,\text{Pa}$). State two additional operating conditions that are important in the Haber process. For each condition, explain why it is used.
State one large-scale use of ammonia, apart from the production of nitrogenous fertilisers.
The careless use of nitrogenous fertilisers can damage lakes and streams. This is called eutrophication. What processes happen when too much nitrogenous fertiliser gets into lakes and streams?
Outline how each of these pollutants may be formed in an internal combustion engine. CO NO
State the main hazard linked to each of these pollutants. CO NO
What metal is most often used as the catalyst in a catalytic converter?
Construct one balanced equation for the reaction in which both CO and NO are removed from exhaust gases by a catalytic converter.