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6. Why is Titanium not extracted by carbon?

  • Its too expensive to use
  • It forms titanium Carbide which makes it brittle
  • It's activation energy's too high
  • It's more reactive

7. Equation at the Cathode

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

8. The Equation at the anode of Aluminium Extraction

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

9. How is extracted Tungsten from its Ore?

  • Reduction of Oxygen
  • Reduction by Hydrogen
  • Electrolysis
  • Reduction by Carbon