Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Metals below carbon in the reactivity series
19 practice questions
Practice questions
1–8 of 8 · Normal
Question 1
2 marks · Normal
Answer and see the solution →State the process used to extract iron from its oxide and name the main reducing agent in this extraction.
Question 2
4 marks · Normal
Answer and see the solution →(a)[1 mark]Write the balanced chemical equation for the reduction of iron(III) oxide by carbon monoxide.
(b)[1 mark]Name the type of reaction that occurs when iron(III) oxide is reduced to iron.
(c)[2 marks]State why carbon is not used to extract aluminium from its oxide.
Question 3
3 marks · Normal
Answer and see the solution →A sample of iron(III) oxide, Fe2O3, weighing 8.0 g is to be reduced by carbon monoxide according to the balanced equation:
Calculate the maximum mass of iron that can be obtained from the sample. (Relative atomic masses: Fe = 56, O = 16)
Question 4
3 marks · Normal
Answer and see the solution →Explain why metals below carbon in the reactivity series, such as zinc and iron, are extracted by reduction with carbon, but metals above carbon are not.
Question 5
4 marks · Normal
Answer and see the solution →The table shows some metals and their relative position in the reactivity series.
Part of the reactivity series Metal Position (1 = most reactive) Potassium 1 Zinc 6 Iron 7 Copper 10 (a)[2 marks]Identify which of these metals can be extracted from its oxide using carbon.
(b)[2 marks]Give a reason for your answer.
Question 6
1 mark · Normal
Answer and check →Which of the following correctly describes the extraction of iron from iron(III) oxide in a blast furnace?
- A.Iron(III) oxide is reduced by carbon monoxide.
- B.Iron(III) oxide is reduced by hydrogen.
- C.Iron(III) oxide is electrolysed to form iron.
- D.Iron(III) oxide is oxidised by carbon.
Question 7
2 marks · Normal
Answer and see the solution →Explain, using the concept of reduction, what happens to iron ions during extraction from iron(III) oxide.
Question 8
4 marks · Normal
Answer and see the solution →(a)[2 marks]Describe one economic advantage of extracting iron by heating with carbon rather than by electrolysis.
(b)[2 marks]The chemical equation for extracting iron using carbon is:
In this reaction, state which substance is oxidised and which is reduced.