(a)[1]
A sample of ammonium carbonate is heated strongly until it has fully decomposed. Suggest what you would observe during the experiment.
(b)[4]
Describe how you would show that both ammonia and carbon dioxide are produced in this decomposition.
(c)[3]
Ammonium carbonate dissolves in water, whereas zinc carbonate is insoluble in water. Describe how you would prepare a sample of pure, dry zinc carbonate using a solution of ammonium carbonate.
(d)[2]
Excess ammonium carbonate reacts with phosphoric acid, $\text{H}_3\text{PO}_4$. Construct an equation for this reaction.