Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Displacement reactions involving solutions of salts
19 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →When iron metal is placed in a solution of copper(II) sulfate, a reaction occurs in which copper metal forms. Write the balanced ionic equation for this displacement reaction.
Question 2
5 marks · Hard
Answer and see the solution →A piece of magnesium is placed in a solution of nickel(II) chloride. Magnesium displaces nickel from the solution.
(a)[1 mark]Identify the spectator ion present in this reaction.
(b)[2 marks]Explain what is meant by a spectator ion in a displacement reaction.
(c)[1 mark]State, in terms of electron transfer, which ion acts as the oxidising agent in this reaction.
(d)[1 mark]State, with a reason, which atom or ion acts as the reducing agent.
Question 3
2 marks · Hard
Answer and see the solution →When zinc metal reacts with iron(II) sulfate solution, write the ionic half-equation for the reduction step in this displacement reaction.