Give reasons
why aluminium cannot be extracted by reducing alumina with carbon
Answers
Answered by
6
Aluminum is too high in the electrochemical series (reactivity series) i.e. it is a stronger reducing agent than carbon and therefore it cannot be extracted from its ore using carbon reduction.
These containers usually have a plastic coating covering the entire inside.The Al2O3 coatings WILL dissolve in concentrations of aqueous Nitric acid more dilute than about 90% HNO3.Al2O3 (s) + 6 HNO3 (aq) --- 2 Al(NO3)3 (aq) + 3 H2OConcentrations above 90% HNO3 are so strongly oxidizing that they do not react with the Aluminum oxide coating. Aluminum storage tanks for industrial sites have been used, but do have problems when cleaning for inspection.
These containers usually have a plastic coating covering the entire inside.The Al2O3 coatings WILL dissolve in concentrations of aqueous Nitric acid more dilute than about 90% HNO3.Al2O3 (s) + 6 HNO3 (aq) --- 2 Al(NO3)3 (aq) + 3 H2OConcentrations above 90% HNO3 are so strongly oxidizing that they do not react with the Aluminum oxide coating. Aluminum storage tanks for industrial sites have been used, but do have problems when cleaning for inspection.
Answered by
1
Explanation:
Aluminium is more reactive than carbon and it has more affinity for oxygen, therefore, alumina cannot be reduced with carbon but is extracted by electrolytic reduction
Similar questions