Alternative methods of metal extraction Practice Questions
Question 1
Q1. Knowledge Recall (1 mark)
Define the term 'reductive extraction'.
Question 2
Q2. Knowledge Recall (2 marks)
State the two main methods of reductive extraction.
Question 3
Q3. Application of Knowledge (3 marks)
Explain how the following factors affect the position of a metal in the reactivity series:
- Atomic radius
- Number of valence electrons
Question 4
Q4. Calculation (4 marks)
Calculate the mass of aluminum produced by the electrolysis of 2.5 moles of aluminum oxide (Al2O3). (Relative atomic mass of Al = 27)
Question 5
Q5. Chemical Equation (3 marks)
Write a balanced chemical equation for the thermite reaction.
Question 6
Q6. Application of Knowledge (2 marks)
Explain why electrolysis is not suitable for extracting copper from its ore.
Question 7
Q7. Knowledge Recall (1 mark)
Name the reducing agent used in the Mond process for extracting nickel.
Question 8
Q8. Calculation (4 marks)
Calculate the volume of hydrogen gas produced at room temperature and pressure by the reaction of 5.0 g of sodium with excess water. (R.A.M. of Na = 23)
Question 9
Q9. Application of Knowledge (3 marks)
Explain the role of the flux in the extraction of iron in a blast furnace.
Question 10
Q10. Knowledge Recall (2 marks)
State one example of a metal that can be extracted using the leaching process.