(a)[2]
Complete the dot-and-cross diagram to display the electronic arrangement in a nitrogen molecule, N₂. Include outer shell electrons only.
(b(i))[2]
Describe how nitrogen is obtained for the Haber process.
(b(ii))[5]
Give the essential reaction conditions and write a chemical equation for the reaction occurring in the Haber process.
(c(i))[2]
State what is meant by the term catalyst.
(c(ii))[1]
State what the term oxidation means.
(c(iii))[4]
Complete the table using the words increase, decrease or no change.
(d)[2]
Write a chemical equation for this process.
(e)[2]
Ammonium nitrate, NH₄NO₃, is a fertiliser. Calculate the percentage by mass of nitrogen in ammonium nitrate.