Other questions in this quiz

2. Equation at the Cathode

  • Al3+ + 3e- → Al
  • Al3+ + 2e- → Al
  • 2O2- → O2 + 4e-
  • Al2+ + 2e- → Al

3. Disadvantage of using carbon to extract iron, copper and manganese

  • Time consuming
  • Gives metals impurities
  • Produces CO2 which is a greenhouse gas
  • Very expensive

4. Disadvantages of using hydrogen to extract tungsten

  • Gives tungsten impurities
  • Very expensive and Hydrogen is highly expolsive
  • Takes a long time
  • Produces CO2 which is a greenhouse gas

5. The Equation at the anode of Aluminium Extraction

  • 3O2- → O2 +4e-
  • Al3+ + 3e- → Al
  • 2O2- → O2 + 4e-
  • 2O2- → O2 + 2e-

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Extraction of Metals resources »