Chemistry 0620 · IGCSE · Identification of ions and gases
Identification of ions and gases — practice question
Insoluble salts may be prepared by precipitation reactions.
A student combined solutions of several soluble salts.
The outcomes obtained by the student are given in the table.
Every sodium salt dissolves in water.
Answer the questions below using only the results in the table.
(a)[2]
(i) Name an insoluble salt of cobalt.
(ii) Name an insoluble yellow salt of lead.
(b)[2]
Write the chemical equation showing how silver carbonate is formed.
(c)[2]
Write the ionic equation showing how lead(II) iodide is formed.
(d)[1]
Explain why aqueous silver nitrate is acidified.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “CoCO3” …