Stion 6.(a) What role does cryolite play in Hall Haraoult process?(b)

1.	Stion 6.(a) What role does cryolite play in Hall Haraoult process?(b) How can alumina be separated from silica in a bauxite oreassociated with silica? Give equations also.
Answer» Answer: (a) Cryolite lowers the melting point of the ore and make it more conductive in nature so as to carry out electrolysis of the ore in Hall- HEROULT process. (b) To separate alumina from silica in bauxite ore associated with silica, first the powdered ore is digested with a concentrated NAOH solution at 473 - 523 K and 35 - 36 bar pressure. This results in the leaching out of alumina (Al2O3) as sodium aluminate and silica (SiO2) as sodium silicate leaving the IMPURITIES behind. Explanation: Mark me as the brainliest..

Stion 6.(a) What role does cryolite play in Hall Haraoult process?(b) How can alumina be separated from silica in a bauxite oreassociated with silica? Give equations also.

Answer»

Answer:

(a)

Cryolite lowers the melting point of the ore and make it more conductive in nature so as to carry out electrolysis of the ore in Hall- HEROULT process.

(b)

To separate alumina from silica in bauxite ore associated with silica, first the powdered ore is digested with a concentrated NAOH solution at 473 - 523 K and 35 - 36 bar pressure. This results in the leaching out of alumina (Al2O3) as sodium aluminate and silica (SiO2) as sodium silicate leaving the IMPURITIES behind.

Explanation:

Mark me as the brainliest..

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