Home
Class 12
CHEMISTRY
In the extraction of Aluminimum by elect...

In the extraction of Aluminimum by electrolysis.
i. Give the composition of electrolyte used
ii. Overall cell reaction
iii. Role of cryolite

Text Solution

Verified by Experts

(i) Molten `Al_(2)O_(3)+Na_(3)AlF_(6)//CaF_(2)`.
(ii) Overall cell reaction. `2Al_(2)O_(3)to 4Al+3O_(2)`
(iii) Lowers the m.p. of the electrolyte OR increases conductivity.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • II PUC APRIL - 2016

    OSWAAL PUBLICATION|Exercise PART - D|27 Videos

  • II PUC APRIL - 2016

    OSWAAL PUBLICATION|Exercise PART - B|8 Videos

  • II PUC ANNUAL EXAMINATION 2019

    OSWAAL PUBLICATION|Exercise PART - D|10 Videos

  • II PUC MARCH - 2017

    OSWAAL PUBLICATION|Exercise PART - D|11 Videos

Similar Questions

Explore conceptually related problems

In the extraction of Aluminium by electrolysis Give the composition of electolyte used

In the extraction of aluminium by electrolysis. (i) Give the composition of the electrolyte used. (ii) Over all reaction. (iii) Role of cryolite.

In the extraction of Aluminium by electrolysis Role of cryolite

In the extraction of Aluminium by electrolysis overall cell reaction

In the extraction of Aluminium by Hall- Herault process: Give the equation of overall cell reaction.

(a) In the extraction of Aluminium by electrolysis. (i) Write qverall cell reaction. (ii) What is the role of cryolite? (b) Name the metal refined by Mond's process.

(a) In extraction of Aluminium by electrolysis, (i) Write ovreall cell reaction. (ii) What is the role of cryolite? (b) Name the metal refined by Mond's process.

During the extraction of aluminimum by Hall - He'rault process, i) Write neat labelled diagram of elecctrolytic cell. ii) Write over all cell reaction. iii) At which electrode oxygen gas is liberated?

During the extraction of aluminium by Hall-Heroult process, (i) Write neat labelled diagram of electrolytic cell. (ii) Write over all cell reaction. (iii) At which electrode oxygen gas is liberated ?

Molten cryolite is mixed with molten alumina in the extraction of aluminium by electrolysis. Why ? Name the substances that are used as anode and cathode in this method.

Home
Profile