(a)[2]
State the conditions for the Haber process: temperature, pressure and catalyst.
(b)[2]
Describe and explain the effect of increasing the pressure on the rate of this reaction.
(c)[1]
Explain how a catalyst speeds up the rate of a chemical reaction.
(d)[2]
The table shows some information about two fertilisers made from ammonia. Use the data in the table to demonstrate that urea contains a larger percentage by mass of nitrogen than ammonium nitrate.