What is the role of CO2 in getting pure alumina (Al22O3) in the extraction of AI. [Delhi 2014(C)]

What is the role of CO2 in getting pure alumina (Al22O3) in the extrac

1.	What is the role of CO2 in getting pure alumina (Al22O3) in the extraction of AI. [Delhi 2014(C)]
Answer» Explanation:CO2 REACTS with the Na and ALUMINIUM COMPLEX to give hydrated ALUMINA which is then HEATED to give pure alumina