Explain how oxides of nitrogen form in car engines and describe their removal by catalytic converters, e.g. (2CO + 2NO ightarrow 2CO_2 + N_2)

Predict and explain, for a reversible reaction, how the position of equilibrium is affected by: (a) changing temperature (b) changing pressure (c) changing concentration (d) using a catalyst using information provided

Describe the use of NPK fertilisers to provide the elements nitrogen, phosphorus and potassium for improved plant growth