(a(i))[3]
Show by calculation that the zinc carbonate is in excess. $\text{ZnCO}_3(s) + 2\text{HNO}_3(aq) \rightarrow \text{Zn(NO}_3)_2(aq) + \text{H}_2\text{O}(l) + \text{CO}_2(g)$ A 4.50 g sample of zinc carbonate is added to 50.0 cm$^3$ of 1.30 mol/dm$^3$ nitric acid.
(a(ii))[1]
After the reaction is complete, the mixture is filtered. State why the mixture is filtered.
(a(iii))[3]
Describe how to make pure, dry zinc nitrate crystals from an aqueous solution of zinc nitrate.
(b)[1]
Lead chloride is an insoluble salt. It is made using a precipitation reaction. Name two aqueous solutions that react together to give a precipitate of lead chloride.
(c)[1]
Ammonium sulfate is a soluble salt. It is made by reacting an alkali with an acid. Name the alkali and the acid used.