Identify the compound which is obtained in following reactions:
Name the other aluminium containing compound added to alumina and state its significance:

Open in App

Solution

The main ore taken for the extraction of aluminium is bauxite. Also the electrolytic mixture, fused cryolite and fluorspar are added to lower the fusion temperature , to enhance the conductivity of the mixture and to enhance the mobility.

Suggest Corrections

Similar questions

Q. (i) Name the solution used to react with Bauxite as a first step in obtaining pure aluminium oxide, in the Baeyer's process.
(ii) Write the equation for the reaction where the aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide.
(iii) Name the compound added to pure alumina to lower the fusion temperature during the electrolytic reduction of alumina.
(iv) Write the equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis.
(v) Explain why it is preferable to use a number of graphite electrodes as anode instead of a single electrode, during the above electrolysis.

Q. Identify the compound which is obtained in following reactions:

Explain why is it necessary to renew the anode periodically?

Which of the following are added to concentrated alumina during the electrolytic reduction of alumina to aluminium by Hall-Heroult process?

Q. Identify the compound which is obtained in following reactions:

Give the equation for the reaction that takes place at the cathode?

(a) Name the chemical compound which is electrolysed in a molten state to obtain aluminium metal. Which gas is evolved during this process?
(b) Name the chemical compound which is electrolysed in a molten state to obtain sodium metal. Which gas is produced in this process?
(c) Name the gas produced when calamine ore is calcined.
(d) Name the gas evolved when cinnabar ore is roasted.

Join BYJU'S Learning Program

Identify the compound which is obtained in following reactions:Name the other aluminium containing compound added to alumina and state its significance:

The main ore taken for the extraction of aluminium is bauxite. Also the electrolytic mixture, fused cryolite and fluorspar are added to lower the fusion temperature , to enhance the conductivity of the mixture and to enhance the mobility.

Identify the compound which is obtained in following reactions:
Name the other aluminium containing compound added to alumina and state its significance: