(a)[2]
Construct the reversible equation for making ammonia from nitrogen and hydrogen.
(b(i))[1]
Name the acid that reacts with ammonia to form ammonium nitrate.
(b(ii))[2]
Calculate the mass percentage of nitrogen in ammonium nitrate, $\text{NH}_4\text{NO}_3$.
(c(i))[1]
Name the process brought about by water pollution from nitrogenous fertilisers.
(c(ii))[1]
Explain why this water-pollution issue is worse when nitrate fertilisers are used rather than other fertilisers.
(d(i))[1]
State what adding calcium hydroxide is intended to do to soil.
(d(ii))[2]
Construct the equation for the reaction between ammonium nitrate and calcium hydroxide, and explain why the ammonium nitrate fertiliser becomes less effective once calcium hydroxide is added.