Question

Name the element extracted by the above process and also name the process.
Give the function of three components of electrolyte.
Why is electrolyte covered with coke?
What does glowing of indicator lamp indicate?
Give the electrolytic reaction taking place at cathode?​

Answer 1

Answer:

sorry yarr don't know the answer of the question

Answer 2

Answer:

Here is the answer to the question

Explanation:

(i) Aluminium, Hall and Herault’s process.

(ii) Alumina (Al2O3) is the main aluminium yielding compound.

Cryolite [Na3AlF6] acts as a solvent and lowers the fusion temperature from 2050°C to 950°C.

Fluorspar (CaF2) acts as a solvent and increases the conductivity of electrolytic mixture.

(iii) A layer of powdered cpke is sprinkled over the surface of the electrolyte mixture because it reduces the heat loss by radiation and prevents carbon anode from brning in air.

(iv) metallurgy-icse-solutions-class-10-chemistry-19

Aluminium formed sinks to the bottom of the tank and is periodically tapped off.