Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Displacement reactions involving solutions of salts
19 practice questions
Practice questions
1–10 of 19
Question 1
1 mark · Easy
Answer and see the solution →State the ionic equation for the reaction of magnesium with copper(II) sulfate solution.
Question 2
3 marks · Easy
Answer and see the solution →Nickel metal is added to a solution of iron(II) nitrate.
(a)[1 mark]State the formula of a spectator ion in this reaction.
(b)[2 marks]Explain what is meant by a spectator ion in a displacement reaction.
Question 3
2 marks · Easy
Answer and see the solution →Write the ionic half-equation for the oxidation step, showing iron metal reacting to form iron(II) ions in a displacement reaction.
Question 4
2 marks · Easy
Answer and see the solution →In the reaction:
State which substance acts as the oxidising agent and which acts as the reducing agent. Explain your answer in terms of electron transfer.
Question 5
3 marks · Easy
Answer and see the solution →The table shows the results of placing samples of metals in solutions of metal nitrates:
Results of Displacement Experiments Metal added Metal nitrate solution Observation Aluminium Silver nitrate Grey crystals form Copper Zinc nitrate No change Iron Copper(II) nitrate Reddish-brown deposit Magnesium Lead(II) nitrate Grey solid forms (a)[1 mark]Write the ionic equation for the reaction when aluminium is added to silver nitrate solution.
(b)[2 marks]Which metal does not react in its experiment? Explain why based on the data.
Question 6
1 mark · Easy
Answer and see the solution →Give the formula of the spectator ion present when potassium metal reacts with sodium chloride solution.
Question 7
3 marks · Easy
Answer and see the solution →Chromium is added to copper(II) sulfate solution. Chromium displaces copper from the solution.
(a)[2 marks]Write the ionic half-equation for the reduction step.
(b)[1 mark]Write the ionic half-equation for the oxidation step.
Question 8
2 marks · Easy
Answer and see the solution →In a reaction between calcium metal and tin(II) sulfate solution, calcium displaces tin.
State which substance is the oxidising agent and which is the reducing agent, giving your answer in terms of electron transfer.
Question 9
2 marks · Normal
Answer and see the solution →Write the ionic equation for the reaction that occurs when a strip of magnesium is placed into a solution of iron(II) sulfate.
Question 10
4 marks · Normal
Answer and see the solution →Aluminium reacts with a solution of copper(II) nitrate.
(a)[1 mark]State the formula of a spectator ion in this reaction.
(b)[1 mark]Explain what is meant by the term 'spectator ion'.
(c)[2 marks]Identify the spectator ion(s) in the following equation: