Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Oxidation and reduction
19 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →In the reaction below, identify the oxidising agent and the reducing agent: State each answer as a chemical formula.
Question 2
5 marks · Hard
Answer and see the solution →The following ionic equation represents a reaction between zinc metal and copper(II) ions:
(a)[2 marks]State which species is oxidised and which is reduced. Give your answers as chemical symbols or formulae.
(b)[1 mark]Write a half-equation for the oxidation process.
(c)[2 marks]Explain, in terms of electron transfer, why zinc is considered a reducing agent in this reaction.
Question 3
2 marks · Hard
Answer and see the solution →Describe what is meant by 'oxidation' and 'reduction', in terms of oxygen transfer.