In Hall's process, the bauxite ore is reacted with:

Concentrated N a O H

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Conc. N a_{2} C O_{3}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C and N_{2} at above 1000^{\circ} C

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Dilute N a O H, C a (O H)_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $Conc. N a_{2} C O_{3}$
Hall's process is used for the extraction of Aluminium from Alumina.
The corresponding reactions involved in the Hall's process is as follows:
$A l_{2} O_{3} .2 H_{2} O + N a_{2} C O_{3} Δ - \to 2 N a A l O_{2} + C O_{2} ↑ + 2 H_{2} O$
$2 N a A l O_{2} + 3 H_{2} O + C O_{2} \to 2 A l (O H)_{3} ↓ + N a_{2} C O_{3}$
$2 A l (O H)_{3} Δ - \to A l_{2} O_{3} + 3 H_{2} O$

Suggest Corrections

Similar questions

Q. In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with

N a O H

In the ore Bauxite $A l_{2} O_{3} .2 H_{2} O$ there are two significant types – Red Bauxite and White Bauxite. Bayer’s process is applicable for __ Bauxite.

Q. Bauxite, the ore of aluminium, is purified by which process?

Q. The mass of carbon anode consumed (giving of carbon dioxide) in the production of

270 k g

aluminium metal bum bauxite by Hall process is: (Atomic mass

A l = 27

)

Join BYJU'S Learning Program

In Hall's process, the bauxite ore is reacted with:

The correct option is B Conc. Na2CO3Hall's process is used for the extraction of Aluminium from Alumina. The corresponding reactions involved in the Hall's process is as follows: Al2O3.2H2O+Na2CO3Δ−→2NaAlO2+CO2↑+2H2O 2NaAlO2+3H2O+CO2→2Al(OH)3↓+Na2CO3 2Al(OH)3Δ−→Al2O3+3H2O