Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

(a) Name one main ore of Aluminium. Write its formula. Which two main impurities are associated with this ore? (b) Describe with chemical equations, the

method employed for the enrichment of the above named ore.


The main ore is bauxite (Al2o3.h2o) Impurities-1.sand 2.silica (SiO2) 3.iron oxide (Fe2O3) Method involvec is bayers process 1.Al2O3+ 2NaOH→2NaAlO2 + H2O 2.NaAlO2 + 2H2O→NaOH + Al(OH)3 ↓ 3. 2Al(OH)3 →( in heat at 1000 C ) Al2O3 + 3H2O
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts